Suppose the derivative of ƒ is ƒ'(x) = x - 3.a. Find the critical points of ƒ.b. On what intervals is ƒ increasing and on what intervals is ƒ decreasing?

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter4: Calculating The Derivative
Section4.4: Derivatives Of Exponential Functions
Problem 19E
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Suppose the derivative of ƒ is ƒ'(x) = x - 3.
a. Find the critical points of ƒ.
b. On what intervals is ƒ increasing and on what intervals is ƒ decreasing?

Expert Solution
Step 1

We have to find:

a. critical points of f
b. On what intervals is f increasing and on what intervals is f decreasing.

Where, f'x=x-3

a.

Critical points are the points where derivatives of the function is zero or not defined.

So making f'x to zero,

f'x=0x-3=0x=3

Hence, critical point of the function is x=3.

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ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,