BuyFindarrow_forward

Calculus: Early Transcendental Fun...

7th Edition
Ron Larson + 1 other
ISBN: 9781337552516

Solutions

Chapter
Section
BuyFindarrow_forward

Calculus: Early Transcendental Fun...

7th Edition
Ron Larson + 1 other
ISBN: 9781337552516
Textbook Problem

Applying the First Derivative Test In Exercises 57-62, consider the function on the interval ( 0 , 2 π ) . (a) Find the open intervals on which the function is increasing or decreasing.(b) Apply the First Derivative Test to identify all relative extrema, (c) Use a graphing utility to confirm your results.

f ( x ) = cos 2 ( 2 x )

(a)

To determine

To calculate: The interval where the first provided function f(x)=cos2(2x) is increasing or decreasing in the domain [0,2π].

Explanation

Given:

The function f(x)=cos2(2x).

Formula used:

The function f said to have a critical point at c if:

f'(c)=0

For any function g(x) that is differentiable in the interval (a,b) and continuous in the interval [a,b], the function g(x) can be classified as an increasing or a decreasing function based on the following conditions:

If d(g(x))dx>0 for the interval (a,b), the function g(x) is said to be increasing in the interval [a,b].

If d(g(x))dx<0 for the interval (a,b), the function g(x) is said to be decreasing in the interval [a,b].

Calculation:

Differentiate the provided function.

f'(x)=2cos2x(sin2x)(2)=2sin4x

Equate this to zero to obtain the critical points.

2sin4x=0sin4x=04x=π,2π,3π,4π,5π,6π,7πx=π4,π2,3π4,π,5π4,3π2,7π4

These critical points give eight intervals:

(0,π4),(π4,π2),(π2,3π4),(3π4,π),(π,5π4),(5π4,3π2)(3π2,7π4),(7π4,2π).

Take a test point in the interval and check the sign of the derivative.

Let π12(0,π4).

f'(π12)=2sin(4(π12))=3<0

The function is decreasing in this interval

(b)

To determine

To calculate: The relative extrema of the function f(x)=cos2(2x) using the first derivative test.

(c)

To determine

To graph: The function f(x)=cos2(2x) and find the relative extrema.

Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started
Sect-4.1 P-11ESect-4.1 P-12ESect-4.1 P-13ESect-4.1 P-14ESect-4.1 P-15ESect-4.1 P-16ESect-4.1 P-17ESect-4.1 P-18ESect-4.1 P-19ESect-4.1 P-20ESect-4.1 P-21ESect-4.1 P-22ESect-4.1 P-23ESect-4.1 P-24ESect-4.1 P-25ESect-4.1 P-26ESect-4.1 P-27ESect-4.1 P-28ESect-4.1 P-29ESect-4.1 P-30ESect-4.1 P-31ESect-4.1 P-32ESect-4.1 P-33ESect-4.1 P-34ESect-4.1 P-35ESect-4.1 P-36ESect-4.1 P-37ESect-4.1 P-38ESect-4.1 P-39ESect-4.1 P-40ESect-4.1 P-41ESect-4.1 P-42ESect-4.1 P-43ESect-4.1 P-44ESect-4.1 P-45ESect-4.1 P-46ESect-4.1 P-47ESect-4.1 P-48ESect-4.1 P-49ESect-4.1 P-50ESect-4.1 P-51ESect-4.1 P-52ESect-4.1 P-53ESect-4.1 P-54ESect-4.1 P-55ESect-4.1 P-56ESect-4.1 P-57ESect-4.1 P-58ESect-4.1 P-59ESect-4.1 P-60ESect-4.1 P-61ESect-4.1 P-62ESect-4.1 P-63ESect-4.1 P-64ESect-4.1 P-65ESect-4.1 P-66ESect-4.1 P-67ESect-4.1 P-68ESect-4.1 P-69ESect-4.1 P-70ESect-4.1 P-71ESect-4.1 P-72ESect-4.1 P-73ESect-4.1 P-74ESect-4.1 P-75ESect-4.1 P-76ESect-4.1 P-77ESect-4.1 P-78ESect-4.1 P-79ESect-4.1 P-80ESect-4.1 P-81ESect-4.2 P-1ESect-4.2 P-2ESect-4.2 P-3ESect-4.2 P-4ESect-4.2 P-5ESect-4.2 P-6ESect-4.2 P-7ESect-4.2 P-8ESect-4.2 P-9ESect-4.2 P-10ESect-4.2 P-11ESect-4.2 P-12ESect-4.2 P-13ESect-4.2 P-14ESect-4.2 P-15ESect-4.2 P-16ESect-4.2 P-17ESect-4.2 P-18ESect-4.2 P-19ESect-4.2 P-20ESect-4.2 P-21ESect-4.2 P-22ESect-4.2 P-23ESect-4.2 P-24ESect-4.2 P-25ESect-4.2 P-26ESect-4.2 P-27ESect-4.2 P-28ESect-4.2 P-29ESect-4.2 P-30ESect-4.2 P-31ESect-4.2 P-32ESect-4.2 P-33ESect-4.2 P-34ESect-4.2 P-35ESect-4.2 P-36ESect-4.2 P-37ESect-4.2 P-38ESect-4.2 P-39ESect-4.2 P-40ESect-4.2 P-41ESect-4.2 P-42ESect-4.2 P-43ESect-4.2 P-44ESect-4.2 P-45ESect-4.2 P-46ESect-4.2 P-47ESect-4.2 P-48ESect-4.2 P-49ESect-4.2 P-50ESect-4.2 P-51ESect-4.2 P-52ESect-4.2 P-53ESect-4.2 P-54ESect-4.2 P-55ESect-4.2 P-56ESect-4.2 P-57ESect-4.2 P-58ESect-4.2 P-59ESect-4.2 P-60ESect-4.2 P-61ESect-4.2 P-62ESect-4.2 P-63ESect-4.2 P-64ESect-4.2 P-65ESect-4.2 P-66ESect-4.2 P-67ESect-4.2 P-68ESect-4.2 P-69ESect-4.2 P-70ESect-4.2 P-71ESect-4.2 P-72ESect-4.2 P-73ESect-4.2 P-74ESect-4.2 P-75ESect-4.2 P-76ESect-4.2 P-77ESect-4.2 P-78ESect-4.2 P-79ESect-4.2 P-80ESect-4.2 P-81ESect-4.2 P-82ESect-4.2 P-83ESect-4.2 P-84ESect-4.2 P-85ESect-4.2 P-86ESect-4.2 P-87ESect-4.2 P-88ESect-4.2 P-89ESect-4.2 P-90ESect-4.2 P-91ESect-4.2 P-92ESect-4.2 P-93ESect-4.2 P-94ESect-4.2 P-95ESect-4.3 P-1ESect-4.3 P-2ESect-4.3 P-3ESect-4.3 P-4ESect-4.3 P-5ESect-4.3 P-6ESect-4.3 P-7ESect-4.3 P-8ESect-4.3 P-9ESect-4.3 P-10ESect-4.3 P-11ESect-4.3 P-12ESect-4.3 P-13ESect-4.3 P-14ESect-4.3 P-15ESect-4.3 P-16ESect-4.3 P-17ESect-4.3 P-18ESect-4.3 P-19ESect-4.3 P-20ESect-4.3 P-21ESect-4.3 P-22ESect-4.3 P-23ESect-4.3 P-24ESect-4.3 P-25ESect-4.3 P-26ESect-4.3 P-27ESect-4.3 P-28ESect-4.3 P-29ESect-4.3 P-30ESect-4.3 P-31ESect-4.3 P-32ESect-4.3 P-33ESect-4.3 P-34ESect-4.3 P-35ESect-4.3 P-36ESect-4.3 P-37ESect-4.3 P-38ESect-4.3 P-39ESect-4.3 P-40ESect-4.3 P-41ESect-4.3 P-42ESect-4.3 P-43ESect-4.3 P-44ESect-4.3 P-45ESect-4.3 P-46ESect-4.3 P-47ESect-4.3 P-48ESect-4.3 P-49ESect-4.3 P-50ESect-4.3 P-51ESect-4.3 P-52ESect-4.3 P-53ESect-4.3 P-54ESect-4.3 P-55ESect-4.3 P-56ESect-4.3 P-57ESect-4.3 P-58ESect-4.3 P-59ESect-4.3 P-60ESect-4.3 P-61ESect-4.3 P-62ESect-4.3 P-63ESect-4.3 P-64ESect-4.3 P-65ESect-4.3 P-66ESect-4.3 P-67ESect-4.3 P-68ESect-4.3 P-69ESect-4.3 P-70ESect-4.3 P-71ESect-4.3 P-72ESect-4.3 P-73ESect-4.3 P-74ESect-4.3 P-75ESect-4.3 P-76ESect-4.3 P-77ESect-4.3 P-78ESect-4.3 P-79ESect-4.3 P-80ESect-4.3 P-81ESect-4.3 P-82ESect-4.3 P-83ESect-4.3 P-84ESect-4.3 P-85ESect-4.3 P-86ESect-4.3 P-87ESect-4.3 P-88ESect-4.3 P-89ESect-4.3 P-90ESect-4.3 P-91ESect-4.3 P-92ESect-4.3 P-93ESect-4.3 P-94ESect-4.3 P-95ESect-4.3 P-96ESect-4.3 P-97ESect-4.3 P-98ESect-4.3 P-99ESect-4.3 P-100ESect-4.3 P-101ESect-4.3 P-102ESect-4.3 P-103ESect-4.3 P-104ESect-4.3 P-105ESect-4.3 P-106ESect-4.3 P-107ESect-4.3 P-108ESect-4.3 P-109ESect-4.3 P-110ESect-4.3 P-111ESect-4.3 P-112ESect-4.3 P-113ESect-4.3 P-114ESect-4.3 P-115ESect-4.3 P-116ESect-4.3 P-117ESect-4.3 P-118ESect-4.3 P-119ESect-4.4 P-1ESect-4.4 P-2ESect-4.4 P-3ESect-4.4 P-4ESect-4.4 P-5ESect-4.4 P-6ESect-4.4 P-7ESect-4.4 P-8ESect-4.4 P-9ESect-4.4 P-10ESect-4.4 P-11ESect-4.4 P-12ESect-4.4 P-13ESect-4.4 P-14ESect-4.4 P-15ESect-4.4 P-16ESect-4.4 P-17ESect-4.4 P-18ESect-4.4 P-19ESect-4.4 P-20ESect-4.4 P-21ESect-4.4 P-22ESect-4.4 P-23ESect-4.4 P-24ESect-4.4 P-25ESect-4.4 P-26ESect-4.4 P-27ESect-4.4 P-28ESect-4.4 P-29ESect-4.4 P-30ESect-4.4 P-31ESect-4.4 P-32ESect-4.4 P-33ESect-4.4 P-34ESect-4.4 P-35ESect-4.4 P-36ESect-4.4 P-37ESect-4.4 P-38ESect-4.4 P-39ESect-4.4 P-40ESect-4.4 P-41ESect-4.4 P-42ESect-4.4 P-43ESect-4.4 P-44ESect-4.4 P-45ESect-4.4 P-46ESect-4.4 P-47ESect-4.4 P-48ESect-4.4 P-49ESect-4.4 P-50ESect-4.4 P-51ESect-4.4 P-52ESect-4.4 P-53ESect-4.4 P-54ESect-4.4 P-55ESect-4.4 P-56ESect-4.4 P-57ESect-4.4 P-58ESect-4.4 P-59ESect-4.4 P-60ESect-4.4 P-61ESect-4.4 P-62ESect-4.4 P-63ESect-4.4 P-64ESect-4.4 P-65ESect-4.4 P-66ESect-4.4 P-67ESect-4.4 P-68ESect-4.4 P-69ESect-4.4 P-70ESect-4.4 P-71ESect-4.4 P-72ESect-4.4 P-73ESect-4.4 P-74ESect-4.4 P-75ESect-4.4 P-76ESect-4.4 P-77ESect-4.4 P-78ESect-4.4 P-79ESect-4.4 P-80ESect-4.4 P-81ESect-4.4 P-82ESect-4.4 P-83ESect-4.4 P-84ESect-4.4 P-85ESect-4.4 P-86ESect-4.4 P-87ESect-4.4 P-88ESect-4.4 P-89ESect-4.4 P-90ESect-4.4 P-91ESect-4.4 P-92ESect-4.4 P-93ESect-4.4 P-94ESect-4.5 P-1ESect-4.5 P-2ESect-4.5 P-3ESect-4.5 P-4ESect-4.5 P-5ESect-4.5 P-6ESect-4.5 P-7ESect-4.5 P-8ESect-4.5 P-9ESect-4.5 P-10ESect-4.5 P-11ESect-4.5 P-12ESect-4.5 P-13ESect-4.5 P-14ESect-4.5 P-15ESect-4.5 P-16ESect-4.5 P-17ESect-4.5 P-18ESect-4.5 P-19ESect-4.5 P-20ESect-4.5 P-21ESect-4.5 P-22ESect-4.5 P-23ESect-4.5 P-24ESect-4.5 P-25ESect-4.5 P-26ESect-4.5 P-27ESect-4.5 P-28ESect-4.5 P-29ESect-4.5 P-30ESect-4.5 P-31ESect-4.5 P-32ESect-4.5 P-33ESect-4.5 P-34ESect-4.5 P-35ESect-4.5 P-36ESect-4.5 P-37ESect-4.5 P-38ESect-4.5 P-39ESect-4.5 P-40ESect-4.5 P-41ESect-4.5 P-42ESect-4.5 P-43ESect-4.5 P-44ESect-4.5 P-45ESect-4.5 P-46ESect-4.5 P-47ESect-4.5 P-48ESect-4.5 P-49ESect-4.5 P-50ESect-4.5 P-51ESect-4.5 P-52ESect-4.5 P-53ESect-4.5 P-54ESect-4.5 P-55ESect-4.5 P-56ESect-4.5 P-57ESect-4.5 P-58ESect-4.5 P-59ESect-4.5 P-60ESect-4.5 P-61ESect-4.5 P-62ESect-4.5 P-63ESect-4.5 P-64ESect-4.5 P-65ESect-4.5 P-66ESect-4.5 P-67ESect-4.5 P-68ESect-4.5 P-69ESect-4.5 P-70ESect-4.5 P-71ESect-4.5 P-72ESect-4.5 P-73ESect-4.5 P-74ESect-4.5 P-75ESect-4.5 P-76ESect-4.6 P-1ESect-4.6 P-2ESect-4.6 P-3ESect-4.6 P-4ESect-4.6 P-5ESect-4.6 P-6ESect-4.6 P-7ESect-4.6 P-8ESect-4.6 P-9ESect-4.6 P-10ESect-4.6 P-11ESect-4.6 P-12ESect-4.6 P-13ESect-4.6 P-14ESect-4.6 P-15ESect-4.6 P-16ESect-4.6 P-17ESect-4.6 P-18ESect-4.6 P-19ESect-4.6 P-20ESect-4.6 P-21ESect-4.6 P-22ESect-4.6 P-23ESect-4.6 P-24ESect-4.6 P-25ESect-4.6 P-26ESect-4.6 P-27ESect-4.6 P-28ESect-4.6 P-29ESect-4.6 P-30ESect-4.6 P-31ESect-4.6 P-32ESect-4.6 P-33ESect-4.6 P-34ESect-4.6 P-35ESect-4.6 P-36ESect-4.6 P-37ESect-4.6 P-38ESect-4.6 P-39ESect-4.6 P-40ESect-4.6 P-41ESect-4.6 P-42ESect-4.6 P-43ESect-4.6 P-44ESect-4.6 P-45ESect-4.6 P-46ESect-4.6 P-47ESect-4.6 P-48ESect-4.6 P-49ESect-4.6 P-50ESect-4.6 P-51ESect-4.6 P-52ESect-4.6 P-53ESect-4.6 P-54ESect-4.6 P-55ESect-4.6 P-56ESect-4.6 P-57ESect-4.6 P-58ESect-4.6 P-59ESect-4.6 P-60ESect-4.6 P-61ESect-4.6 P-62ESect-4.6 P-63ESect-4.6 P-64ESect-4.6 P-65ESect-4.6 P-66ESect-4.6 P-67ESect-4.6 P-68ESect-4.6 P-69ESect-4.6 P-70ESect-4.6 P-71ESect-4.6 P-72ESect-4.6 P-73ESect-4.6 P-74ESect-4.6 P-75ESect-4.6 P-76ESect-4.6 P-77ESect-4.6 P-78ESect-4.6 P-79ESect-4.6 P-80ESect-4.6 P-81ESect-4.6 P-82ESect-4.6 P-83ESect-4.6 P-84ESect-4.6 P-85ESect-4.6 P-86ESect-4.6 P-87ESect-4.6 P-88ESect-4.6 P-89ESect-4.6 P-90ESect-4.6 P-91ESect-4.6 P-92ESect-4.6 P-93ESect-4.6 P-94ESect-4.6 P-95ESect-4.6 P-96ESect-4.6 P-97ESect-4.6 P-98ESect-4.6 P-99ESect-4.6 P-100ESect-4.6 P-101ESect-4.6 P-102ESect-4.6 P-103ESect-4.6 P-104ESect-4.6 P-105ESect-4.6 P-106ESect-4.6 P-107ESect-4.6 P-108ESect-4.7 P-1ESect-4.7 P-2ESect-4.7 P-3ESect-4.7 P-4ESect-4.7 P-5ESect-4.7 P-6ESect-4.7 P-7ESect-4.7 P-8ESect-4.7 P-9ESect-4.7 P-10ESect-4.7 P-11ESect-4.7 P-12ESect-4.7 P-13ESect-4.7 P-14ESect-4.7 P-15ESect-4.7 P-16ESect-4.7 P-17ESect-4.7 P-18ESect-4.7 P-19ESect-4.7 P-20ESect-4.7 P-21ESect-4.7 P-22ESect-4.7 P-23ESect-4.7 P-24ESect-4.7 P-25ESect-4.7 P-26ESect-4.7 P-27ESect-4.7 P-28ESect-4.7 P-29ESect-4.7 P-30ESect-4.7 P-31ESect-4.7 P-32ESect-4.7 P-33ESect-4.7 P-34ESect-4.7 P-35ESect-4.7 P-36ESect-4.7 P-37ESect-4.7 P-38ESect-4.7 P-39ESect-4.7 P-40ESect-4.7 P-41ESect-4.7 P-42ESect-4.7 P-43ESect-4.7 P-44ESect-4.7 P-45ESect-4.7 P-46ESect-4.7 P-47ESect-4.7 P-48ESect-4.7 P-49ESect-4.7 P-50ESect-4.7 P-51ESect-4.7 P-52ESect-4.7 P-53ESect-4.7 P-54ESect-4.7 P-55ESect-4.7 P-56ESect-4.7 P-57ESect-4.7 P-58ESect-4.8 P-1ESect-4.8 P-2ESect-4.8 P-3ESect-4.8 P-4ESect-4.8 P-5ESect-4.8 P-6ESect-4.8 P-7ESect-4.8 P-8ESect-4.8 P-9ESect-4.8 P-10ESect-4.8 P-11ESect-4.8 P-12ESect-4.8 P-13ESect-4.8 P-14ESect-4.8 P-15ESect-4.8 P-16ESect-4.8 P-17ESect-4.8 P-18ESect-4.8 P-19ESect-4.8 P-20ESect-4.8 P-21ESect-4.8 P-22ESect-4.8 P-23ESect-4.8 P-24ESect-4.8 P-25ESect-4.8 P-26ESect-4.8 P-27ESect-4.8 P-28ESect-4.8 P-29ESect-4.8 P-30ESect-4.8 P-31ESect-4.8 P-32ESect-4.8 P-33ESect-4.8 P-34ESect-4.8 P-35ESect-4.8 P-36ESect-4.8 P-37ESect-4.8 P-38ESect-4.8 P-39ESect-4.8 P-40ESect-4.8 P-41ESect-4.8 P-42ESect-4.8 P-43ESect-4.8 P-44ESect-4.8 P-45ESect-4.8 P-46ESect-4.8 P-47ESect-4.8 P-48ESect-4.8 P-49ESect-4.8 P-50ESect-4.8 P-51ESect-4.8 P-52ESect-4.8 P-53ESect-4.8 P-54ESect-4.8 P-55ESect-4.8 P-56ESect-4.8 P-57ESect-4.8 P-58ESect-4.8 P-59ECh-4 P-1RECh-4 P-2RECh-4 P-3RECh-4 P-4RECh-4 P-5RECh-4 P-6RECh-4 P-7RECh-4 P-8RECh-4 P-9RECh-4 P-10RECh-4 P-11RECh-4 P-12RECh-4 P-13RECh-4 P-14RECh-4 P-15RECh-4 P-16RECh-4 P-17RECh-4 P-18RECh-4 P-19RECh-4 P-20RECh-4 P-21RECh-4 P-22RECh-4 P-23RECh-4 P-24RECh-4 P-25RECh-4 P-26RECh-4 P-27RECh-4 P-28RECh-4 P-29RECh-4 P-30RECh-4 P-31RECh-4 P-32RECh-4 P-33RECh-4 P-34RECh-4 P-35RECh-4 P-36RECh-4 P-37RECh-4 P-38RECh-4 P-39RECh-4 P-40RECh-4 P-41RECh-4 P-42RECh-4 P-43RECh-4 P-44RECh-4 P-45RECh-4 P-46RECh-4 P-47RECh-4 P-48RECh-4 P-49RECh-4 P-50RECh-4 P-51RECh-4 P-52RECh-4 P-53RECh-4 P-54RECh-4 P-55RECh-4 P-56RECh-4 P-57RECh-4 P-58RECh-4 P-59RECh-4 P-60RECh-4 P-61RECh-4 P-62RECh-4 P-63RECh-4 P-64RECh-4 P-65RECh-4 P-66RECh-4 P-67RECh-4 P-68RECh-4 P-69RECh-4 P-70RECh-4 P-71RECh-4 P-72RECh-4 P-73RECh-4 P-74RECh-4 P-75RECh-4 P-76RECh-4 P-77RECh-4 P-78RECh-4 P-79RECh-4 P-80RECh-4 P-81RECh-4 P-82RECh-4 P-83RECh-4 P-84RECh-4 P-85RECh-4 P-86RECh-4 P-87RECh-4 P-88RECh-4 P-89RECh-4 P-90RECh-4 P-91RECh-4 P-92RECh-4 P-93RECh-4 P-94RECh-4 P-95RECh-4 P-96RECh-4 P-97RECh-4 P-98RECh-4 P-99RECh-4 P-100RECh-4 P-101RECh-4 P-102RECh-4 P-103RECh-4 P-104RECh-4 P-105RECh-4 P-106RECh-4 P-107RECh-4 P-108RECh-4 P-109RECh-4 P-1PSCh-4 P-2PSCh-4 P-3PSCh-4 P-4PSCh-4 P-5PSCh-4 P-6PSCh-4 P-7PSCh-4 P-8PSCh-4 P-9PSCh-4 P-10PSCh-4 P-11PSCh-4 P-12PSCh-4 P-13PSCh-4 P-14PSCh-4 P-15PSCh-4 P-16PSCh-4 P-17PSCh-4 P-18PSCh-4 P-19PS

Additional Math Solutions

Find more solutions based on key concepts

Show solutions add

Convert the expressions in Exercises 6584 to power form. 1(x2+1)334(x2+1)3

Finite Mathematics and Applied Calculus (MindTap Course List)

In Exercises 4954, find an equation of the line that satisfies the given condition. 53. The line passing throug...

Applied Calculus for the Managerial, Life, and Social Sciences: A Brief Approach

Identify the four steps of a hypothesis test as presented in this chapter.

Statistics for The Behavioral Sciences (MindTap Course List)

Factor each expression in Problems 7-18 as a product of binomials. 15.

Mathematical Applications for the Management, Life, and Social Sciences