22 If Sx) is an odd function, the second difference [SSAx) – 2(0) +-Ax)]/(Ax)? exactly equals f"(0) = 0. Why?

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Please do 22 and give a complete argument for the statement. Please show step by step.

Locate the inflection points and the regions where (x) is con
cave up or down.
17 (x) = x+x – x
18 (x) = sin x+ tan x
19 Ax) = (x – 2)°(x - 4)?
20 flx) = sin x + (sin x)
21 If f(x) is an even function, the centered difference
[SAx) -A-Ax)]/2Ax exactly equals f'(0) = 0. Why?
22 If (x) is an odd function, the second difference
[SAx) – 2/(0) +A-Ax)]/{Ax)? exactly equals f"(0) = 0. Why?
Transcribed Image Text:Locate the inflection points and the regions where (x) is con cave up or down. 17 (x) = x+x – x 18 (x) = sin x+ tan x 19 Ax) = (x – 2)°(x - 4)? 20 flx) = sin x + (sin x) 21 If f(x) is an even function, the centered difference [SAx) -A-Ax)]/2Ax exactly equals f'(0) = 0. Why? 22 If (x) is an odd function, the second difference [SAx) – 2/(0) +A-Ax)]/{Ax)? exactly equals f"(0) = 0. Why?
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