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AP Calculus AB Free Response Questions

The best way to get better at FRQs is practice. Browse through dozens of practice AP Calculus AB FRQs to get ready for the big day.

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  • Unit 1: Limits and Continuity (35)
  • Unit 2: Differentiation: Definition and Fundamental Properties (33)
  • Unit 3: Differentiation: Composite, Implicit, and Inverse Functions (29)
  • Unit 4: Contextual Applications of Differentiation (27)
  • Unit 5: Analytical Applications of Differentiation (31)
  • Unit 6: Integration and Accumulation of Change (35)
  • Unit 7: Differential Equations (29)
  • Unit 8: Applications of Integration (31)
Unit 1: Limits and Continuity

Algebraic Manipulation in Limit Evaluation

Evaluate the limit $$\lim_{x \to 1} \frac{x^3 - 1}{x - 1}$$.

Easy

Analysis of a Removable Discontinuity in a Log-Exponential Function

Consider the function $$p(x)= \frac{e^{x}-e}{\ln(x)-\ln(1)}$$ for $$x \neq 1$$. The function is unde

Medium

Analysis of One-Sided Limits and Jump Discontinuity

Consider the piecewise function $$ f(x)=\begin{cases}3x+1,& x<2,\\ x^2,& x \ge 2.\end{cases} $$ Ans

Medium

Analyzing a Discontinuous Function with a Sequence Component

The function is given by $$f(x) = \frac{\sin(\pi x)}{\pi (x - 1)}$$ for $$x \neq 1$$ (with f(1) unde

Extreme

Analyzing Limit of an Oscillatory Velocity Function

A particle moves along a line with velocity given by $$v(t)= t*\cos\left(\frac{\pi}{t}\right)$$ for

Hard

Analyzing Process Data for Continuity

A manufacturing process produces items whose lengths (in mm) are recorded as a function f(x) of time

Medium

Application of the Squeeze Theorem in Trigonometric Limits

Consider the function $$f(x) = x^2 * \sin(1/x)$$ for $$x \neq 0$$ with $$f(0)=0$$. Answer the follow

Medium

Area and Volume Setup with Bounded Regions

Consider the region R bounded by the curves $$y = x^2$$, $$y = 4$$, and $$x = 0$$. Though integratio

Hard

Continuity Analysis of a Piecewise Function

Consider the function defined by $$ f(x)=\begin{cases}2x+1, & x<1,\\ x^2, & 1\le x\le 3,\\ 7-x, & x

Medium

Continuity and Limit Comparison for Two Particle Paths

Two particles, A and B, travel along the same line. Their position functions are given by $$s_A(t)=

Medium

Continuity at Zero for a Trigonometric Function

Consider the function $$f(x)= x*\sin\left(\frac{1}{x}\right)$$ for x $$\neq 0$$ and $$f(0)=0$$. Answ

Medium

Determining Parameters for Continuity

Consider the function $$f(x)= \begin{cases} 2*x + k, & x < 1 \\ x^2, & x \geq 1 \end{cases}$$, where

Medium

Discontinuities in a Rational-Exponential Function

Consider the function $$ f(x) = \begin{cases} \frac{e^{x} - 1}{x}, & x \neq 0 \\ k, & x = 0. \en

Easy

Epsilon-Delta Analysis of a Limit

Consider the linear function $$f(x) = 3*x + 1$$. For $$\epsilon = 0.5$$, answer the following:

Hard

Error Analysis in Limit Calculation

Consider the function $$f(x)=\frac{x^2-4}{x-2}$$.

Easy

Estimating Derivatives Using Limit Definitions from Data

The position of an object (in meters) is recorded at various times (in seconds) in the table below.

Hard

Evaluating a Limit with Radical Expressions

Evaluate the limit $$\lim_{x \to 9} \frac{\sqrt{x} - 3}{x - 9}$$. Answer the following:

Easy

Graph Analysis of Discontinuities

Examine the provided graph of a function f(x) that displays both a removable discontinuity and a jum

Hard

Intermediate Value Theorem in Context

Let $$f(x) = x^3 - 6x^2 + 9x + 2$$, which is continuous on the interval [0, 4]. Answer the following

Medium

Intermediate Value Theorem in Temperature Modeling

A continuous function $$ f(x) $$ describes the temperature (in °C) throughout a day, with $$f(0)=15$

Easy

Jump Discontinuity Analysis

Consider the piecewise function $$f(x)=\begin{cases} 2*x+1, & x < 1 \\ 3*x-2, & x \ge 1 \end{cases}

Easy

Limit Evaluation in a Parametric Particle Motion Context

A particle’s position in the plane is given by the parametric equations $$x(t)= \frac{t^2-4}{t-2}, \

Extreme

Limits from Data in Chemical Reaction Rates

In a chemical reaction, the concentration of a reactant (in M) is monitored over time (in seconds).

Hard

Limits Involving Absolute Value Functions

Consider the function $$ f(x)=\frac{|x-3|}{x-3} $$.

Easy

Mixed Function with Jump Discontinuity at Zero

Consider the function $$f(x)=\begin{cases} 1+x & x<0\\ 2 & x=0\\ \frac{\sin(x)}{x}+1 & x>0 \end{case

Medium

One-Sided Limits and Continuity of a Piecewise Function

Consider the piecewise function $$w(x)= \begin{cases} \frac{e^{x}-1}{x} & \text{if } x<0, \\ \frac{\

Medium

Optimization and Continuity in a Manufacturing Process

A company designs a cylindrical can (without a top) for which the cost function in dollars is given

Hard

Oscillatory Function and the Squeeze Theorem

Consider the function $$f(x)= x*\sin(1/x)$$ for $$x \neq 0$$, with $$f(0)=0$$. Answer the following:

Medium

Rational Function Analysis

Consider the rational function $$f(x)=\frac{(x+3)*(x-2)}{x-2}$$ defined for $$x \neq 2$$. Answer the

Easy

Rational Function and Removable Discontinuity

Consider the function $$f(x)=\frac{x^2-4}{x-2}$$ for $$x \neq 2$$. Answer the following:

Easy

Removal of Discontinuity by Redefinition

Consider the function $$f(x)=\frac{x^2-9}{x-3}$$ for \(x \neq 3\). Answer the following:

Easy

Squeeze Theorem Application

Let $$f(x)=x^2\sin(1/x)$$ for \(x\neq 0\) and define \(f(0)=0\). Use the Squeeze Theorem to complete

Medium

Squeeze Theorem with an Oscillatory Function

Consider the function $$f(x) = x \cdot \sin\left(\frac{1}{x}\right)$$ for $$x \neq 0$$ and define $$

Medium

Trigonometric Limit Evaluation

Examine the function $$ f(x)= \frac{\sin(3*x)}{x} $$ for $$x\ne0$$.

Easy

Vertical Asymptote Analysis

Consider the function $$f(x)=\frac{x+2}{x-1}$$. Answer the following:

Easy
Unit 2: Differentiation: Definition and Fundamental Properties

Analyzing Rates Without a Calculator: Average vs Instantaneous Rates

Consider the function $$f(x)= x^2$$.

Easy

Application of Product Rule

Differentiate the function $$f(x)=(3x^2+2x)(x-4)$$ by two methods. Answer the following:

Easy

Approximating Derivatives Using Secant Lines

For the function $$f(x)=\ln(x)$$, we want to approximate the derivative at $$x=3$$ using secant line

Medium

Approximating Small Changes with Differentials

Let $$f(x)= x^3 - 5*x + 2$$. Use differentials to approximate small changes in the value of $$f(x)$$

Medium

Behavior of the Derivative Near a Vertical Asymptote

Consider the function \(f(x)=\frac{1}{x+2}\) defined for \(x \neq -2\). Answer the following parts.

Extreme

Chain Rule Application

Consider the composite function $$f(x)=\sqrt{1+4*x^2}$$, which may describe a physical dimension.

Medium

Comparing Average vs. Instantaneous Rates

Consider the function $$f(x)= x^3 - 2*x + 1$$. Experimental data for the function is provided in the

Medium

Difference Quotient and Derivative of a Rational Function

Consider the function $$f(x)= \frac{x+2}{x-3}$$.

Hard

Differentiability and Continuity

A function is defined piecewise as follows: $$f(x)= \begin{cases} x^2 & \text{if } x \le 1, \\ 2*x +

Hard

Differentiation Using the Quotient Rule

Consider the function \(q(x)=\frac{3*x^2+5}{2*x-1}\). Answer the following parts.

Medium

Exponential Growth Rate

Consider the function $$f(x)= 3*e^{2*x}$$ which models a quantity growing exponentially over time.

Medium

Finding the Derivative Using First Principles

Consider the function $$f(x)= 5*x^3 - 4*x + 7$$. Use the definition of the derivative to find the de

Medium

Finding the Derivative using the Limit Definition

Let $$h(x)= 5*x^2 + 3*x - 7$$. Use the limit definition of the derivative to determine $$h'(x)$$.

Easy

Graph Interpretation of the Derivative

Consider the function $$f(x)= x^3 - 6*x^2 + 9*x + 1$$. A graph of this function is provided below.

Medium

Graphical Estimation of a Derivative

Consider the graph provided which plots the position $$s(t)$$ (in meters) of an object versus time $

Medium

Highway Traffic Flow Analysis

Vehicles enter a highway ramp at a rate given by $$f(t)=60+4*t$$ (vehicles/min) and exit the highway

Medium

Implicit Differentiation with Trigonometric Functions

Let the relationship between x and y be given by the equation $$\sin(x*y) = x + y$$. Answer the foll

Hard

Inverse Function Analysis: Cubic with Linear Term

Consider the function $$f(x)=x^3+x$$ defined for all real numbers.

Hard

Investigating the Derivative of a Piecewise Function

The function $$f(x)$$ is defined piecewise by $$f(x)=\begin{cases} x^2 & \text{if } x \le 1, \\ 2*x

Hard

Marginal Cost Analysis

A company's total cost function is given by $$C(x)=5*x^2+20*x+100$$, where $$x$$ represents the numb

Easy

Motion Analysis with Acceleration and Direction Change

A particle moves along a straight line with acceleration given by $$a(t)=12-4*t$$, where $$t$$ is in

Hard

Piecewise Function and Discontinuities

A piecewise function $$f$$ is defined by $$ f(x)=\begin{cases} \frac{x^2-4}{x-2} & \text{if } x\ne

Medium

Population Growth and Instantaneous Rate of Change

A town's population is modeled by $$P(t)= 2000*e^{0.05*t}$$, where $$t$$ is in years. Analyze the ch

Medium

Product and Quotient Rule Combination

Given $$u(x)=3*x^2+2$$ and $$v(x)=x-4$$, consider the function $$F(x)=\frac{u(x)*v(x)}{x+1}$$. Answe

Hard

Projectile Motion Analysis

A projectile is launched with its height (in meters) modeled by the function $$f(t)= -5*t^2 + 20*t +

Medium

Radioactive Decay Analysis

The amount of a radioactive substance is modeled by $$N(t)= 200*e^{-0.03*t}$$, where $$t$$ is in yea

Medium

Rate of Water Flow in a Rational Function Model

The water flow from a reservoir is modeled by $$F(t)= \frac{3*t}{t+2}$$, where $$t$$ is time in hour

Hard

Related Rates: Shadow Length Change

A person 1.8 m tall is walking away from a streetlight that is 5 m high. Let x represent the distanc

Medium

Secant Approximation Convergence and the Derivative

Consider the natural logarithm function $$f(x)= \ln(x)$$. Investigate its rate of change using the d

Extreme

Slope of a Tangent Line from Experimental Data

Experimental data recording the distance traveled by an object over time is provided in the table be

Easy

Tangent Line and Differentiability

Let $$h(x)=\frac{1}{x+2}$$, modeling the concentration of a substance in a chemical solution over ti

Hard

Using Derivative Rules on a Trigonometric Function

Consider the function $$f(x)=3*\sin(x)+\cos(2*x)$$. Answer the following questions:

Hard

Using the Limit Definition of the Derivative

Consider the function $$g(x)=3*x^3-2*x+5$$, which models the cost (in dollars) of manufacturing $$x$

Medium
Unit 3: Differentiation: Composite, Implicit, and Inverse Functions

Advanced Implicit and Inverse Function Differentiation on Polar Curves

Consider the curve defined implicitly by $$x^2+y^2= \sin(x*y)$$. Although not a typical polar curve,

Extreme

Analyzing Motion in the Plane using Implicit Differentiation

A particle moves in the xy-plane along a path defined implicitly by $$x^2+x*y+y^2=7$$. Determine the

Medium

Chain Rule in Angular Motion

An object rotates such that its angular position is given by $$\theta(t)= \arctan(3*t^2)$$, where $$

Medium

Chain Rule in Particle Motion

A particle's position is given by $$s(t)=\cos(5*t^2)$$ in meters, where time $$t$$ is measured in se

Medium

Chain Rule in Temperature Variation

A metal rod's temperature along its length is given by the function $$T(x)= \cos((4*x+2)^2)$$, where

Medium

Chain Rule with Exponential and Polynomial Functions

Let $$h(x)= e^{3*x^2+2*x}$$ represent a function combining exponential and polynomial elements.

Easy

Combining Composite and Implicit Differentiation

Consider the equation $$e^{x*y}+x^2-y^2=7$$.

Hard

Composite and Rational Function Differentiation

Let $$P(x)=\frac{x^2}{\sqrt{1+x^2}}$$.

Medium

Composite Function in a Real-World Fuel Consumption Problem

A company models its fuel consumption with the function $$C(t)=\ln(5*t^2+7)$$, where $$t$$ represent

Medium

Composite Function: Engineering Stress-Strain Model

In an engineering context, the stress σ as a function of strain ε is given by $$\sigma(\epsilon) = \

Hard

Differentiation of a Composite Inverse Trigonometric-Log Function

Let $$f(x)= \ln\left(\arctan(e^(x))\right)$$. Differentiate and evaluate as required:

Hard

Differentiation of a Log-Exponential-Trigonometric Composite

Consider the function $$f(x)= \ln\left(e^(\cos(x)) + x^2\right)$$. Solve the following:

Medium

Economic Equilibrium: Composite and Inverse Functions

In an economic model, the demand function is given by the composite function $$D(p)= f(g(p))$$, wher

Hard

Finding Second Derivative via Implicit Differentiation

Given the curve defined by $$x^2+y^2+ x*y=7$$, answer the following:

Hard

Graph Analysis of a Composite Motion Function

A displacement function representing the motion of an object is given by $$s(t)= \ln(2*t+3)$$. The g

Easy

Implicit Curve Analysis: Horizontal Tangents

Consider the curve defined implicitly by $$x^2+ e^(y)= 5$$. Answer the following:

Medium

Implicit Differentiation in a Trigonometric Context

Consider the equation $$\sin(x*y)+x-y=0$$. Answer the following:

Medium

Implicit Differentiation in Elliptical Orbits

Consider an elliptical orbit described by the equation $$\frac{x^2}{16}+\frac{y^2}{9}=1$$, where the

Medium

Implicit Trigonometric Equation Analysis

Consider the equation $$x \sin(y) + \cos(y) = x$$. Answer the following parts.

Hard

Inverse Function Differentiation

Let $$f(x)=x^3+x$$ which is one-to-one on its domain. Its inverse function is denoted by $$g(x)$$.

Easy

Inverse Function Differentiation Combined with Chain Rule

Let $$f(x)=\sqrt{x-1}+x^2$$, and assume that it is one-to-one on its domain, with an inverse functio

Hard

Inverse Function Differentiation in a Biological Growth Curve

A biological measurement is modeled by the function $$f(t)= \frac{4*t}{t+2}$$, which is one-to-one o

Medium

Inverse Function Differentiation in an Exponential Model

Let $$f(x) = e^{2*x} + x$$, and let g be its inverse function. Answer the following parts.

Medium

Inverse Function Differentiation in Logarithmic Functions

Let $$f(x)=\ln(x+2)$$, which is one-to-one and has an inverse function $$g(y)$$. Answer the followin

Medium

Inverse Function Differentiation in Temperature Conversion

Consider the function $$f(x)= \frac{1}{1+e^{-0.5*x}}$$, which converts a temperature reading in Cels

Medium

Inverse Trigonometric and Logarithmic Function Composition

Let $$y=\arctan(\ln(x))$$. Answer the following:

Medium

Rate of Change in a Circle's Shadow

The equation of a circle is given by $$x^2 + y^2 = 36$$. A point \((x,y)\) on the circle corresponds

Easy

Tangent Lines on an Ellipse

Consider the ellipse given by $$\frac{x^2}{9} + \frac{y^2}{4} = 1$$. Use the graph provided to aid i

Medium

Water Tank Flow Analysis using Composite Functions

A water tank is equipped with an inflow system and an outflow system. At time $$t$$ (in minutes), wa

Medium
Unit 4: Contextual Applications of Differentiation

Airplane Altitude Change

An airplane's altitude (in meters) as a function of time is modeled by $$A(t)= 500*t - 4.9*t^2 + 100

Medium

Chemical Reaction Rate Analysis

The concentration of a reactant in a chemical reaction is modeled by $$C(t)=\frac{10}{1+e^{0.5t}}$$,

Medium

Complex Piecewise Function Analysis

Consider the function $$f(x)=\begin{cases}\frac{\sin(x)}{x} & x<\pi \\ 2 & x=\pi \\ 1+\cos(x-\pi) &

Medium

Depth of a Well: Related Rates Problem

A bucket is being lowered into a well, and its depth is modeled by $$d(t)= \sqrt{t + 4}$$, where $$t

Medium

Economic Cost Function Linearization

A company's production cost is modeled by $$C(x)= 0.02*x^3 - 1.5*x^2 + 40*x + 200$$ dollars, where $

Hard

Economic Efficiency in Speed

A vehicle’s fuel consumption per mile (in dollars) is modeled by the function $$C(v)=0.05*v^2 - 3*v

Medium

Estimating Instantaneous Rates from Discrete Data

In a laboratory experiment, the concentration of a chemical (in molarity, M) is recorded over time (

Medium

Evaluating Indeterminate Limits via L'Hospital's Rule

Scientists are studying the limit of the function $$L(x)=\frac{5x^3-4x^2+1}{7x^3+2x-6}$$ as $$x \to

Medium

Friction and Motion: Finding Instantaneous Rates

A block slides down an inclined plane. The height of the plane at a horizontal distance $$x$$ is giv

Easy

FRQ 2: Balloon Inflation Analysis

A spherical balloon is being inflated. Its volume is given by $$V = \frac{4}{3}\pi r^3$$, and the ra

Medium

FRQ 6: Particle Motion Analysis on a Straight Line

A particle moving along a straight line has its velocity described by $$v(t) = 3*t^2 - 4*t + 2$$, wh

Medium

FRQ 13: Cost Function Linearization

A company’s cost function is given by $$C(x) = 5*x^3 - 60*x^2 + 200*x + 1000$$, where x represents t

Medium

FRQ 14: Optimizing Box Design with Fixed Volume

A manufacturer wants to design an open-top box with a fixed volume of $$V = x^2*y = 32$$ cubic units

Hard

Inflating Balloon Rates

A spherical balloon is being inflated such that its volume increases at a constant rate of $$\frac{d

Medium

L'Hôpital's Rule in Action

Evaluate the following limit by applying L'Hôpital's Rule as necessary: $$\lim_{x \to \infty} \frac{

Easy

L'Hôpital’s Rule in Limits with Contextual Application

Consider the function $$f(x)= \frac{e^{2*x} - 1}{5*e^{2*x} - 5}$$, which models a growth phenomenon.

Extreme

Modeling Coffee Cooling

The temperature of a cup of coffee is modeled by the function $$T(t)=70+50e^{-0.1t}$$, where $$t$$ i

Medium

Motion Analysis from Velocity Function

A particle moves along a straight line with a velocity given by $$v(t) = t^2 - 4t + 3$$ (in m/s). Th

Hard

Optimization of Production Costs

A manufacturing company’s cost function for producing $$x$$ units per hour is given by $$C(x)=\frac{

Hard

Projectile Motion Analysis

A projectile is launched vertically, and its height (in meters) as a function of time is given by $$

Medium

Projectile Motion with Velocity Components

A projectile is launched from the ground with a constant horizontal velocity of 15 m/s and a vertica

Medium

Projectile Motion: Evaluating Maximum Height

A projectile is launched vertically with its height given by $$h(t)= -4.9*t^2 + 19.6*t + 3$$, where

Easy

Related Rates in a Conical Tank

Water is draining from a conical tank. The volume of water is given by $$V = \frac{1}{3}\pi r^2 h$$,

Hard

Related Rates: Expanding Oil Spill

An oil spill on calm water forms a perfect circle. The area of the spill is increasing at a constant

Medium

Related Rates: The Expanding Ripple

Ripples form in a pond such that the radius of a circular ripple increases at a constant rate. Given

Easy

Shadow Length Problem

A 10-meter tall streetlight casts a shadow of a 1.8-meter tall person. If the person walks away from

Easy

Transformation of Logarithmic Functions

Consider the function $$f(x)=\ln(3x-2)$$. Analyze the function and its transformation:

Medium
Unit 5: Analytical Applications of Differentiation

Analyzing Critical Points in a Piecewise Function

The function \( f(x) \) is defined piecewise by \( f(x)= \begin{cases} x^2, & x \le 2, \\

Hard

Area and Volume: Polynomial Boundaries

Let $$f(x)= x^2$$ and $$g(x)= 4 - x^2$$. Consider the region bounded by these two curves.

Medium

Area Growth of an Expanding Square

A square has a side length given by $$s(t)= t + 2$$ (in seconds), so its area is $$A(t)= (t+2)^2$$.

Easy

Average Value of a Function and Mean Value Theorem for Integrals

Consider the function $$f(x)= e^{-x}$$ on the interval $$[0, 2]$$. Answer the following:

Hard

Bacterial Culture Growth: Identifying Critical Points from Data

A microbiologist records the population of a bacterial culture (in millions) at different times (in

Medium

Capacitor Discharge in an RC Circuit

The voltage across a capacitor during discharge is given by $$V(t)= V_0*e^{-t/(RC)}$$, where $$t$$ i

Medium

Chemical Reactor Temperature Optimization

In a chemical reactor, the temperature is controlled by the rate of coolant inflow. The coolant infl

Extreme

Concavity and Inflection Points in a Quartic Function

Analyze the concavity and determine any points of inflection for the function $$f(x)= x^4 - 4*x^3$$.

Medium

Evaluating Rate of Change in Electric Current Data

An electrical engineer recorded the current (in amperes) in a circuit over time. The table below sho

Easy

Exploration of a Removable Discontinuity in a Rational Function

Consider the function $$ f(x) = \begin{cases} \frac{x^2 - 16}{x - 4}, & x \neq 4, \\ 7, & x = 4. \e

Easy

FRQ 3: Relative Extrema for a Cubic Function

Consider the function $$f(x) = x^3 - 6*x^2 + 9*x + 2$$.

Medium

FRQ 10: First Derivative Test for a Cubic Profit Function

A company’s profit function is given by $$P(x)= x^3 - 9*x^2 + 24*x + 1$$, where $$x$$ represents the

Medium

FRQ 19: Analysis of an Exponential-Polynomial Function

Consider the function $$f(x)= e^{-x}*x^2$$ defined for $$x \ge 0$$.

Hard

FRQ 20: Profit Analysis Combining MVT and Optimization

A company’s profit function is given by $$P(x)= -2*x^3 + 18*x^2 - 48*x + 40$$, where $$x$$ (in thous

Hard

Graph Analysis: Exponentially Modified Function

Consider the function $$f(x)= 2e^{x}-5\ln(x+1)$$ defined for $$x> -1$$. Answer the following:

Hard

Inverse Analysis of a Cooling Temperature Function

A cooling process is described by the function $$f(t)=20+80*e^{-0.05*t}$$, where t is the time in mi

Hard

Inverse Analysis of a Quadratic Function (Restricted Domain)

Consider the function $$f(x)=x^2-4*x+7$$ defined on the restricted domain $$[2, \infty)$$. Analyze t

Medium

Investigating the Behavior of a Composite Function

Consider the function $$f(x)= (x^2+1)*(x-3)$$. Answer the following:

Hard

Logistic Growth Model and Derivative Interpretation

Consider the logistic growth model given by $$f(t)= \frac{5}{1+ e^{-t}}$$, where $$t$$ represents ti

Medium

Mean Value Theorem for a Cubic Function

Consider the function $$f(x)= x^3 - 2*x^2 + x$$ on the closed interval $$[0,2]$$. In this problem, y

Medium

Mean Value Theorem for a Piecewise Function

Consider the function defined by $$ f(x)= \begin{cases} x^2, & x \le 2, \\ 4x - 4, & x > 2, \end

Hard

Optimization of a Rectangular Enclosure

A rectangular pen is to be constructed along the side of a barn so that only three sides require fen

Medium

Optimization of an Open-Top Box

A company is designing an open-top box with a square base. The volume of the box is modeled by the f

Hard

Piecewise Function and the Mean Value Theorem

Consider the piecewise function $$f(x)= \begin{cases} x^2 & \text{if } x \le 1, \\ 2*x - 1 & \text{

Medium

Solving an Exponential Equation

Solve for $$x$$ in the equation $$e^{2x}= 5*e^{x}$$. Answer the following:

Easy

Temperature Change and the Mean Value Theorem

A temperature model for a day is given by $$T(t)= 2*t^2 - 3*t + 5$$, where $$t$$ is measured in hour

Medium

Traffic Flow Modeling

A highway segment experiences varying traffic flows. Cars enter at a rate $$I(t)=50+10*\sin(\frac{\p

Medium

Verifying the Mean Value Theorem for a Polynomial Function

Consider the function $$f(x) = x^3 - 3*x^2 + 4$$ defined on the interval $$[0, 3]$$. Answer the foll

Easy

Volume of Solid with Square Cross-Sections

Consider the region between $$f(x)= \sin(x)$$ and the x-axis on the interval $$[0, \pi]$$. A solid i

Medium

Water Droplet Free Fall Analysis

A water droplet is released from a ceiling, and its height (in meters) above the ground is modeled b

Medium

Water Reservoir Net Change

A water reservoir receives water from a river at a rate $$R_{in}(t)=5+0.5*t$$ and discharges water a

Easy
Unit 6: Integration and Accumulation of Change

Accumulation and Flow Rate in a Tank

Water flows into a tank at a rate given by $$R(t)=3*t^2-2*t+1$$ (in m³/hr) for $$0\le t\le2$$. The t

Medium

Analyzing Work Done by a Variable Force

An object is acted on by a force given by $$F(x)= 3*x^2 - x + 2$$ (in newtons), where $$x$$ is the d

Medium

Antiderivative via U-Substitution

Evaluate the antiderivative of the function $$f(x)=(3*x+5)^4$$ and use it to compute a definite inte

Easy

Antiderivatives with Initial Conditions: Temperature

The rate of temperature change in a chemical reaction is given by $$T'(t)=-0.2*t+3$$ (in °C/min), wi

Easy

Approximating Area Under a Curve with Riemann Sums

Consider a function $$f(x)$$ whose values are tabulated below for different values of $$x$$. Use the

Easy

Calculating Total Distance Traveled from a Changing Velocity Function

A particle moves with a velocity given by $$v(t)=t^2 - 4*t + 3$$ (in m/s) for $$0 \le t \le 5$$. Not

Hard

Comparing Riemann Sum Methods for a Complex Function

Consider the function $$f(x)=\frac{1}{1+x^2}$$ on the interval [0,1]. Answer the following:

Medium

Composite Functions and Accumulation

Let the accumulation function be defined by $$F(x)=\int_{2}^{x} \sqrt{t+1}\,dt.$$ Answer the followi

Medium

Computing Accumulated Volume from a Filling Rate Function

A small pond is being filled at a rate given by $$r(t)=2*t + 3$$ (in $$m^3/hr$$), where $$t$$ is in

Easy

Definite Integral as an Accumulation Function

A generator consumes fuel at a rate given by $$f(t)=t*e^{-t}$$ (in liters per second). Answer the fo

Medium

Economic Analysis: Consumer Surplus

In a competitive market, the demand function is given by $$D(p)=100-2*p$$ and the supply function is

Extreme

Economic Cost Function Analysis

A company's marginal cost (in dollars per unit) is recorded at various production levels. Use the da

Hard

Error Estimates in Numerical Integration

Suppose a function $$f(x)$$ defined on an interval $$[a,b]$$ is known to be concave downward. Consid

Hard

Estimating Accumulated Water Inflow Using Riemann Sums

A water tank fills at varying rates. The table below shows the inflow rate in liters per second at d

Easy

Estimating Area Under a Curve Using Riemann Sums

Consider the function whose values are given in the table below. Use the table to estimate the area

Easy

Estimating River Flow Volume

A river's flow rate (in cubic meters per second) has been measured at various times during an 8-hour

Hard

Estimating the Area Under a Curve Using Riemann Sums

A function $$f(x)$$ is defined on the interval $$[0,6]$$ and its values are listed in the table belo

Medium

Evaluating a Definite Integral Using U-Substitution

Compute the integral $$\int_{0}^{3} (2*t+1)^5\,dt$$ using u-substitution.

Medium

Evaluating a Radical Integral via U-Substitution

Evaluate the integral $$\int_{1}^{9}\sqrt{2*x+1}\,dx$$ using U-substitution. Answer the following pa

Medium

FRQ8: Inverse Analysis of a Piecewise-Defined Accumulation Function

Let $$ R(x)=\begin{cases} \int_{1}^{x} t\,dt, & 1 \le x \le 3 \\ \int_{1}^{x} (2*t-1)\,dt, & x > 3 \

Hard

FRQ17: Inverse Analysis of a Biologically Modeled Accumulation Function

In a biological study, the net concentration of a chemical is modeled by $$ B(t)=\int_{0}^{t} (0.6*t

Medium

General Antiderivatives and the Constant of Integration

Given the function $$f(x)= 4*x^3$$, address the following questions about antiderivatives.

Easy

Improving Area Approximations with Increasing Subintervals

Consider the function $$f(x)= \sqrt{x}$$ on the interval $$[0,4]$$. Explore how Riemann sums approxi

Hard

Integration of Exponential Functions with Shifts

Evaluate the integral $$\int_{0}^{2} e^{2*(x-1)}\,dx$$ using an appropriate substitution.

Medium

Integration to Determine Work Done by a Variable Force

A variable force along a straight line is given by $$F(x)=4*x^2 - 3*x + 2$$ (in Newtons). Determine

Medium

Motion Along a Line: Changing Velocity

A particle moves along a line with a velocity given by $$v(t)=12-2*t$$ (in m/s) for $$0\le t\le8$$,

Medium

Particle Motion with Variable Acceleration

A particle moves along a straight line with an acceleration given by $$a(t) = 6 - 4*t$$ (in m/s²). T

Medium

Particle Trajectory in the Plane

A particle moves in the plane with its velocity components given by $$v_x(t)=\cos(t)$$ and $$v_y(t)=

Medium

Population Growth: Accumulation through Integration

A certain population grows at a rate modeled by $$R(t)= 0.5*t^2 - 3*t + 10$$ (individuals per year),

Medium

Rainfall Accumulation Analysis

The rainfall intensity at a location is modeled by the function $$i(t) = 0.5*t$$ (inches per hour) f

Easy

Sand Pile Dynamics

A sand pile is being formed by delivering sand at a rate of $$r_{in}(t) = 3t$$ kg/min while erosion

Medium

Total Water Volume from a Flow Rate Function

A river’s flow rate (in cubic meters per second) is modeled by the function $$Q(t)=4+2*t$$, where $$

Medium

Trapezoidal Rule Application with Population Growth

A biologist recorded the instantaneous growth rate (in thousands per year) of a species over several

Medium

Trigonometric Integral with U-Substitution

Evaluate the definite integral $$\int_{0}^{\frac{\pi}{4}} \sec^2(t)\tan(t)\,dt$$.

Medium

Trigonometric Integration via U-Substitution

Evaluate the integral $$I=\int_{0}^{\frac{\pi}{4}} \tan(x)*\sec^2(x)\,dx.$$ Answer the following par

Medium
Unit 7: Differential Equations

Analyzing Direction Fields for $$dy/dx = y-1$$

Consider the differential equation $$dy/dx = y - 1$$. A slope field for this equation is provided. A

Easy

Analyzing Slope Fields for $$dy/dx=x\sin(y)$$

Consider the differential equation $$\frac{dy}{dx}=x\sin(y)$$. A corresponding slope field is provid

Medium

Cooling of a Cup of Coffee

Newton's Law of Cooling states that the rate of change of temperature of an object is proportional t

Medium

Cooling of Electronic Components

After shutdown, the temperature $$T$$ (in °C) of an electronic component is recorded over time (in s

Hard

Differential Equation with Substitution using u = y/x

Consider the differential equation $$\frac{dy}{dx}= \frac{y}{x}+\sqrt{\frac{y}{x}}$$. Use the substi

Hard

Fishery Harvesting Model

The fish population in a lake is modeled by the differential equation $$\frac{dP}{dt} = 0.8P\left(1-

Hard

Homogeneous Differential Equation

Consider the differential equation $$\frac{dy}{dx} = \frac{x+y}{x-y}$$ with the initial condition $$

Hard

Insulin Concentration Dynamics

The concentration $$I$$ (in μU/mL) of insulin in the blood follows the model $$\frac{dI}{dt}=-k(I-I_

Hard

Linear Differential Equation using Integrating Factor

Solve the linear differential equation $$\frac{dy}{dx} + 2y = x$$ with the initial condition $$y(0)=

Medium

Logistic Growth in a Population

A population $$P(t)$$ grows according to the logistic differential equation $$\frac{dP}{dt}=0.5P\lef

Hard

Logistic Population Growth

A population grows according to the logistic model $$\frac{dP}{dt}= r * P\left(1-\frac{P}{K}\right)$

Hard

Logistic Population Model Analysis

A population $$P$$ grows according to the logistic equation $$\frac{dP}{dt}=0.4P\left(1-\frac{P}{100

Medium

Mixing Problem in a Tank

A tank initially contains 100 liters of brine with 10 kg of dissolved salt. Brine with a concentrati

Medium

Mixing Tank Problem

A tank initially contains $$100$$ liters of pure water. A salt solution with a concentration of $$0.

Hard

Motion Along a Curve with Implicit Differentiation

A particle moves along the curve defined by $$x^2+ y^2- 2*x*y= 1$$. At a certain instant, its horizo

Medium

Newton's Law of Cooling

A hot object is placed in a room with constant temperature $$20^\circ C$$. Its temperature $$T$$ sat

Medium

Newton's Law of Cooling with Temperature Data

A thermometer records the temperature of an object cooling in a room. The object's temperature $$T(t

Medium

Newton's Law of Cooling with Variable Ambient Temperature

An object cools according to Newton's Law of Cooling, but the ambient temperature is not constant. I

Extreme

Population Growth in a Bacterial Culture

A bacterial culture has its population measured (in thousands) at various times (in hours). The tabl

Medium

Radioactive Isotope in Medicine

A radioactive isotope used in medical imaging decays according to $$\frac{dA}{dt}=-kA$$, where $$A$$

Medium

Reversible Chemical Reaction

In a reversible chemical reaction, the concentration $$C(t)$$ of a product is governed by the differ

Medium

Salt Mixing in a Tank

A tank initially contains 100 L of water with 5 kg of salt dissolved. Brine with a concentration of

Medium

Salt Mixing Problem

A tank initially contains $$100$$ kg of salt dissolved in $$1000$$ L of water. A salt solution with

Medium

Sand Erosion in a Beach Model

During a storm, a beach loses sand. Let $$S(t)$$ (in tons) be the amount of sand on a beach at time

Medium

Slope Field Analysis for $$\frac{dy}{dx}=\frac{y}{x}$$

Consider the differential equation $$\frac{dy}{dx}= \frac{y}{x}$$. A slope field for this equation i

Medium

Slope Field Interpretation for $$\frac{dy}{dx} = y-x$$

A slope field for the differential equation $$\frac{dy}{dx}=y-x$$ is provided in the stimulus. Use t

Easy

Slope Field Sketching for $$\sin(x)$$ Model

Given the slope field for the differential equation $$\frac{dy}{dx} = \sin(x)$$, sketch a solution c

Easy

Tank Draining Differential Equation

Water drains from a tank at a rate that depends on the square root of the volume, according to $$\fr

Medium

Water Tank Flow Analysis

A water tank receives an inflow of water at a rate $$Q_{in}(t)=50+10*\sin(t)$$ (liters/min) and an o

Medium
Unit 8: Applications of Integration

Accumulated Nutrient Intake from a Drip

A medical nutrient drip administers a nutrient at a variable rate given by $$N(t)=-0.03*t^2+1.5*t+20

Medium

Analysis of a Rational Function's Average Value

Consider the rational function $$f(x)=\frac{2*x}{x^2+1}$$ defined on the interval $$[-1,1]$$. Analyz

Medium

Area Between Curves with Variable Limits

Consider two functions, $$f(x)$$ and $$g(x)$$, whose values are tabulated below. The functions inter

Extreme

Area Between Curves: River Cross-Section

A river's cross-sectional profile is modeled by two curves. The bank is represented by $$y = 10 - 0.

Medium

Area Between Parabolic Curves

Consider the curves $$f(x)=x^2$$ and $$g(x)=4*x-x^2$$. Determine the area of the region bounded by t

Easy

Average Density of a Rod

A rod of length $$10$$ cm has a linear density given by $$\rho(x)= 4 + x$$ (in g/cm) for $$0 \le x \

Medium

Average Reaction Rate Determination

A chemical reaction’s rate is modeled by the function $$r(t)=k*e^{-t}$$, where $$t$$ is in seconds a

Easy

Average Temperature of a Cooling Liquid

The temperature of a cooling liquid is modeled by $$T(t)=50*e^{-0.1*t}+20$$ (in $$^\circ C$$) for $$

Medium

Average Temperature Over a Day

In a city, the temperature (in $$^\circ C$$) is modeled by $$T(t)=10+5*\cos\left(\frac{\pi*t}{12}\ri

Medium

Average Velocity from Position Data

The position of a vehicle moving along a straight road is given in the table below. Use these data t

Easy

Bloodstream Drug Concentration

A drug enters the bloodstream at a rate given by $$R(t)= 5*e^{-0.5*t}$$ mg/min for $$t \ge 0$$. Simu

Medium

Car Motion: Position, Velocity, and Acceleration

A car moving along a straight eastbound road has an acceleration given by $$a(t)=4-0.5*t$$ (in m/s²)

Hard

Center of Mass of a Lamina with Variable Density

A thin lamina occupies the interval $$[0,4]$$ along the x-axis and has a variable density $$\delta(x

Extreme

Cost Analysis with Discontinuous Pricing

A utility company’s billing is modeled by the function $$C(q)=\begin{cases} 3*q & \text{if } 0\le q\

Medium

Designing a Water Slide

A water slide is designed along the curve $$y=-0.1*x^2+2*x+3$$ (in meters) over the interval $$[0,10

Extreme

Displacement from a Velocity Graph

A moving object has its velocity given as a function of time. A velocity versus time graph is provid

Medium

Environmental Impact: Average Pollutant Concentration

The pollutant concentration in a river is modeled by $$h(x)=0.01*x^3-0.5*x^2+5*x$$ (in mg/L) over a

Medium

Funnel Design: Volume by Cross Sections

A funnel is designed by rotating the region bounded by the curve $$y=4-x^2$$ for -2 ≤ x ≤ 2 about th

Extreme

Hiking Trail: Position from Velocity

A hiker's velocity is given by $$v(t)=3\cos(t/2)+1$$ (in km/h) for 0 ≤ t ≤ 2π. Assuming the hiker st

Medium

Population Growth and Average Rate

A town's population is modeled by the function $$P(t)=1000*e^{0.03*t}$$, where $$t$$ is measured in

Medium

Tank Draining with Variable Flow Rates

A water tank is undergoing simultaneous inflow and outflow. The inflow rate is given by $$I(t)=10+2\

Medium

Volume by Rotation using the Disc Method

Consider the region bounded by $$y=\sqrt{x}$$, the $$x$$-axis, and the vertical lines $$x=0$$ and $$

Easy

Volume of a Rotated Region by the Disc Method

Consider the region bounded by the curve $$f(x)=\sqrt{x}$$ and the line $$y=0$$ for $$0 \le x \le 4$

Medium

Volume of a Solid of Revolution Using the Washer Method

The region bounded by the curves $$x=\sqrt{y}$$ and $$x=\frac{y}{2}$$ for $$y\in[0,4]$$ is revolved

Hard

Volume of a Solid of Revolution: Curve Raised to a Power

Consider the region under the curve $$f(x)=x^{1/3}$$ for $$x\in [0,8]$$. This region is revolved abo

Medium

Volume of a Solid of Revolution: Disc Method

Consider the region R bounded by $$y= \sqrt{x}$$, the x-axis, and the vertical line $$x=4$$. When R

Medium

Volume of a Solid with a Hole Using the Washer Method

Consider the region bounded by $$y=x^2$$ and $$y=4$$. This region is revolved about the $$x$$-axis t

Medium

Volume with Semicircular Cross‐Sections

A region in the first quadrant is bounded by the curve $$y=x^2$$ and the x-axis for $$0 \le x \le 3$

Medium

Water Tank Filling with Graduated Inflow

A water tank is filled daily by adding a certain amount of water that increases by a fixed amount ea

Medium

Work Done by a Variable Force

A force acting along a straight line is given by $$F(x)=3*x^2+2$$ (in Newtons) when an object is dis

Medium

Work in Pumping Water from a Conical Tank

A water tank is in the shape of an inverted right circular cone with height $$10\,m$$ and top radius

Extreme

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FAQWe thought you might have some questions...
Where can I find practice free response questions for the AP Calculus AB exam?
The free response section of each AP exam varies slightly, so you’ll definitely want to practice that before stepping into that exam room. Here are some free places to find practice FRQs :
  • Of course, make sure to run through College Board's past FRQ questions!
  • Once you’re done with those go through all the questions in the AP Calculus ABFree Response Room. You can answer the question and have it grade you against the rubric so you know exactly where to improve.
  • Reddit it also a great place to find AP free response questions that other students may have access to.
How do I practice for AP AP Calculus AB Exam FRQs?
Once you’re done reviewing your study guides, find and bookmark all the free response questions you can find. The question above has some good places to look! while you’re going through them, simulate exam conditions by setting a timer that matches the time allowed on the actual exam. Time management is going to help you answer the FRQs on the real exam concisely when you’re in that time crunch.
What are some tips for AP Calculus AB free response questions?
Before you start writing out your response, take a few minutes to outline the key points you want to make sure to touch on. This may seem like a waste of time, but it’s very helpful in making sure your response effectively addresses all the parts of the question. Once you do your practice free response questions, compare them to scoring guidelines and sample responses to identify areas for improvement. When you do the free response practice on the AP Calculus AB Free Response Room, there’s an option to let it grade your response against the rubric and tell you exactly what you need to study more.
How do I answer AP Calculus AB free-response questions?
Answering AP Calculus AB free response questions the right way is all about practice! As you go through the AP AP Calculus AB Free Response Room, treat it like a real exam and approach it this way so you stay calm during the actual exam. When you first see the question, take some time to process exactly what it’s asking. Make sure to also read through all the sub-parts in the question and re-read the main prompt, making sure to circle and underline any key information. This will help you allocate your time properly and also make sure you are hitting all the parts of the question. Before you answer each question, note down the key points you want to hit and evidence you want to use (where applicable). Once you have the skeleton of your response, writing it out will be quick, plus you won’t make any silly mistake in a rush and forget something important.