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Calculus: Early Transcendental Fun...

7th Edition
Ron Larson + 1 other
ISBN: 9781337552516

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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 29-38,(a) find the critical numbers of f, if any, (b) find the open intervals on which the function is increasing or decreasing,(c) apply the First Derivative Test to identify all relative extrema, and (d) use a graphing utility to confirm your results. r

f ( x ) = cos x sin x , ( 0 , 2 π )

(a)

To determine

To calculate: The critical points for the provided function f(x)=cosxsinx.

Explanation

Given:

The function f(x)=cosxsinx in the interval (0,2π).

Formula used:

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

f'(c)=0

Calculation:

It can be seen that the provided function is differentiable on the provided interval.

Differentiate the provided function

(b)

To determine

To calculate: The interval where the first provided function f(x)=cosxsinx is increasing or decreasing.

(c)

To determine

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

(d)

To determine

To graph: The function f(x)=cosxsinx and calculate the relative extrema.

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