AP®︎ Calculus AB: Unit 5 Practice Test

Prepare for your quiz, test, or the AP exam with focused practice questions on Unit 5 of AP Calculus AB – Analytical Applications of Differentiation.


Questions List

Unit 5 (All Topics)

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Question 1 Topic 5.1Easy

Suppose a<ba<b, and ff is continuous on [a,b][a,b] and differentiable on (a,b)(a,b). The Mean Value Theorem guarantees that there is at least one value cc, a<c<ba<c<b, such that which of the following is true?

Af′(c)=f(b)−f(a)b−af'(c)=\dfrac{f(b)-f(a)}{b-a}
Bf′(c)=0f'(c)=0
Cf′(c)=f(b)−f(a)f'(c)=f(b)-f(a)
Df(c)=f(b)−f(a)b−af(c)=\dfrac{f(b)-f(a)}{b-a}

What You’re Being Tested On:

Explore the learning objectives taken directly from the College Board’s AP® Calculus AB Curriculum. Ensure you’re prepared for the exact topics covered on the AP® exam, in-class tests, and quizzes, and gain confidence in your mastery of the material.

Unit 5: Analytical Applications of Differentiation

Analyze functions using derivatives and solve optimization and graph-analysis problems.

Topic 5.1: Using the Mean Value Theorem

Learning Objective: FUN-1.B

Justify conclusions about functions by applying the Mean Value Theorem over an interval.

Essential Knowledge: FUN-1.B.1

If a function f is continuous over the interval [a, b] and differentiable over the interval (a, b), then the Mean Value Theorem guarantees a point within that open interval where the instantaneous rate of change equals the average rate of change over the interval.

Topic 5.2: Extreme Value Theorem, Global Versus Local Extrema, and Critical Points

Learning Objective: FUN-1.C

Justify conclusions about functions by applying the Extreme Value Theorem.

Essential Knowledge: FUN-1.C.1

If a function f is continuous over the interval (a, b), then the Extreme Value Theorem guarantees that f has at least one minimum value and at least one maximum value on [a, b].

Essential Knowledge: FUN-1.C.2

A point on a function where the first derivative equals zero or fails to exist is a critical point of the function.

Essential Knowledge: FUN-1.C.3

All local (relative) extrema occur at critical points of a function, though not all critical points are local extrema.

Topic 5.3: Determining Intervals on Which a Function Is Increasing or Decreasing

Learning Objective: FUN-4.A

Justify conclusions about the behavior of a function based on the behavior of its derivatives.

Essential Knowledge: FUN-4.A.1

The first derivative of a function can provide information about the function and its graph, including intervals where the function is increasing or decreasing.

Topic 5.4: Using the First Derivative Test to Determine Relative (Local) Extrema

Learning Objective: FUN-4.A

Justify conclusions about the behavior of a function based on the behavior of its derivatives.

Essential Knowledge: FUN-4.A.2

The first derivative of a function can determine the location of relative (local) extrema of the function.

Topic 5.5: Using the Candidates Test to Determine Absolute (Global) Extrema

Learning Objective: FUN-4.A

Justify conclusions about the behavior of a function based on the behavior of its derivatives.

Essential Knowledge: FUN-4.A.3

Absolute (global) extrema of a function on a closed interval can only occur at critical points or at endpoints.

Topic 5.6: Determining Concavity of Functions over Their Domains

Learning Objective: FUN-4.A

Justify conclusions about the behavior of a function based on the behavior of its derivatives.

Essential Knowledge: FUN-4.A.4

The graph of a function is concave up (down) on an open interval if the function’s derivative is increasing (decreasing) on that interval.

Essential Knowledge: FUN-4.A.5

The second derivative of a function provides information about the function and its graph, including intervals of upward or downward concavity.

Essential Knowledge: FUN-4.A.6

The second derivative of a function may be used to locate points of inflection for the graph of the original function.

Topic 5.7: Using the Second Derivative Test to Determine Extrema

Learning Objective: FUN-4.A

Justify conclusions about the behavior of a function based on the behavior of its derivatives.

Essential Knowledge: FUN-4.A.7

The second derivative of a function may determine whether a critical point is the location of a relative (local) maximum or minimum.

Essential Knowledge: FUN-4.A.8

When a continuous function has only one critical point on an interval on its domain and the critical point corresponds to a relative (local) extremum of the function on the interval, then that critical point also corresponds to the absolute (global) extremum of the function on the interval.

Topic 5.8: Sketching Graphs of Functions and Their Derivatives

Learning Objective: FUN-4.A

Justify conclusions about the behavior of a function based on the behavior of its derivatives.

Essential Knowledge: FUN-4.A.9

Key features of functions and their derivatives can be identified and related to their graphical, numerical, and analytical representations.

Essential Knowledge: FUN-4.A.10

Graphical, numerical, and analytical information from f' and f'' can be used to predict and explain the behavior of f.

Topic 5.9: Connecting a Function, Its First Derivative, and Its Second Derivative

Learning Objective: FUN-4.A

Justify conclusions about the behavior of a function based on the behavior of its derivatives.

Essential Knowledge: FUN-4.A.11

Key features of the graphs of f, f', and f" are related to one another.

Topic 5.10: Introduction to Optimization Problems

Learning Objective: FUN-4.B

Calculate minimum and maximum values in applied contexts or analysis of functions.

Essential Knowledge: FUN-4.B.1

The derivative can be used to solve optimization problems; that is, finding a minimum or maximum value of a function on a given interval.

Topic 5.11: Solving Optimization Problems

Learning Objective: FUN-4.C

Interpret minimum and maximum values calculated in applied contexts.

Essential Knowledge: FUN-4.C.1

Minimum and maximum values of a function take on specific meanings in applied contexts.

Topic 5.12: Exploring Behaviors of Implicit Relations

Learning Objective: FUN-4.D

Determine critical points of implicit relations.

Essential Knowledge: FUN-4.D.1

A point on an implicit relation where the first derivative equals zero or does not exist is a critical point of the function.

Learning Objective: FUN-4.E

Justify conclusions about the behavior of an implicitly defined function based on evidence from its derivatives.

Essential Knowledge: FUN-4.E.1

Applications of derivatives can be extended to implicitly defined functions.

Essential Knowledge: FUN-4.E.2

Second derivatives involving implicit differentiation may be relations of x, y, and dy/dx.