Let f(x) = 7xex.(a) Find f '(x) and f "(x).f'(x) =f"(x)=(b) Find the exact value of x so that f "(x) = 0.X =(c) For what interval is f(x) concave up? Enter your answer using interval notation.

We differentiate the function twice. A function will be concave up if f"(x)>0

Answered: et f(x) = 7xex. (a) Find f '(x) and f…

et f(x) = 7xex. (a) Find f '(x) and f "(x). f'(x) = f"(x) = (b) Find the exact value of x so that f"(x) = 0. <= (c) For what interval is f(x) concave up? Enter your answer using interval notation.

Trigonometry (MindTap Course List)

10th Edition

ISBN:9781337278461

Author:Ron Larson

Publisher:Ron Larson

ChapterP: Prerequisites

SectionP.6: Analyzing Graphs Of Functions

Problem 6ECP: Find the average rates of change of f(x)=x2+2x (a) from x1=3 to x2=2 and (b) from x1=2 to x2=0.

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Question

Let f(x) = 7xex.
(a) Find f '(x) and f "(x).
f'(x) =
f"(x)
=
(b) Find the exact value of x so that f "(x) = 0.
X =
(c) For what interval is f(x) concave up? Enter your answer using interval notation.

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