(b) The function 00 f(2) = = + Z- NT n=1 is thus well-defined for every z mm for any integer m. Show that lim zf(z) = 1, f(-z) = -f(2), (2十) = f(). f(/2) = 0, (1) with the middle identities holding whenever either side is defined (z ma for any integer m). Hint: use partial sums for the third equality; the other three are easy.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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(b) The function
f(2) = - +
1
+.
Z - NT
n=1
is thus well-defined for every z # ma for any integer m. Show that
lim zf(z) = 1,
f(-2) = -f(2),
f(2+x) = f(2),
f(7/2) = 0,
(1)
with the middle identities holding whenever either side is defined (z ma for any integer m).
Hint: use partial sums for the third equality; the other three are easy.
Transcribed Image Text:(b) The function f(2) = - + 1 +. Z - NT n=1 is thus well-defined for every z # ma for any integer m. Show that lim zf(z) = 1, f(-2) = -f(2), f(2+x) = f(2), f(7/2) = 0, (1) with the middle identities holding whenever either side is defined (z ma for any integer m). Hint: use partial sums for the third equality; the other three are easy.
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