Find the points of inflection of the graph of the function. (Order your answers from smallest to largest x, then from smallest to largest y. If an answer does not exist, enter DNE.) f(x) = x + cos(x), [0, 2x] (х, у) - (x, y) = Describe the concavity. (Enter your answers using interval notation. If an answer does not exist, enter DNE.) concave upward concave downward

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Find the points of inflection of the graph of the function. (Order your answers from smallest to largest x, then from smallest to largest y. If an answer does not exist, enter DNE.)
f(x) = x + cos(x),
[О, 2л]
(х, у)
(х, у)
Describe the concavity. (Enter your answers using interval notation. If an answer does not exist, enter DNE.)
concave upward
concave downward
Transcribed Image Text:Find the points of inflection of the graph of the function. (Order your answers from smallest to largest x, then from smallest to largest y. If an answer does not exist, enter DNE.) f(x) = x + cos(x), [О, 2л] (х, у) (х, у) Describe the concavity. (Enter your answers using interval notation. If an answer does not exist, enter DNE.) concave upward concave downward
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