A twice-differentiable function f is defined for all real numbers x. The derivative of the function f and its second derivative have the properties and various values of x, as indicated in the table. Xx 0

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter6: The Trigonometric Functions
Section6.3: Trigonometric Functions Of Real Numbers
Problem 65E
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A twice-differentiable function f is defined for all real numbers x. The derivative of the function f and its second derivative have the properties and various values of x, as indicated in the
table.
X 0<x<3 3 3<x< 6
f'(x) positive DNE positive 0
f"(x) positive DNE negative 0
6 6<x<9
negative
negative
Part A: Find all values of x at which f has a relative extrema on the interval [0, 9]. Determine whether f has a relative maximum or a relative minimum at each of these values. Justify your
answer.
Part B: Determine where the graph of f is concave up and where it is concave down. Support your answer.
Part C: Find any points of inflection of f. Show the analysis that leads to your answer.
Transcribed Image Text:A twice-differentiable function f is defined for all real numbers x. The derivative of the function f and its second derivative have the properties and various values of x, as indicated in the table. X 0<x<3 3 3<x< 6 f'(x) positive DNE positive 0 f"(x) positive DNE negative 0 6 6<x<9 negative negative Part A: Find all values of x at which f has a relative extrema on the interval [0, 9]. Determine whether f has a relative maximum or a relative minimum at each of these values. Justify your answer. Part B: Determine where the graph of f is concave up and where it is concave down. Support your answer. Part C: Find any points of inflection of f. Show the analysis that leads to your answer.
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