Do not use technology. The figure below shows the graph of f', the derivative of f. The function f is a twice differentiable function on x E (-co, co), f'(-0.8) = 0, and f"(1.3) = 0. -3 (a) For what values of x is f increasing? (Enter your answer using interval notation.) (b) For what values of x is the graph of f concave downward? (Enter your answer using interval notation.)
Do not use technology. The figure below shows the graph of f', the derivative of f. The function f is a twice differentiable function on x E (-co, co), f'(-0.8) = 0, and f"(1.3) = 0. -3 (a) For what values of x is f increasing? (Enter your answer using interval notation.) (b) For what values of x is the graph of f concave downward? (Enter your answer using interval notation.)
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:Do not use technology.
The figure below shows the graph of f', the derivative of f. The function f is a twice differentiable function on x E (-∞o, co), f'(-0.8) = 0, and f"(1.3) = 0.
-3
(a) For what values of x is f increasing? (Enter your answer using interval notation.)
(b) For what values of x is the graph of f concave downward? (Enter your answer using interval notation.)
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