5. Find the Fourier series of |x| of period 27 and evaluate the sum 1 1+ 32 1 +... 52

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Plz answer fast q5
5. Find the Fourier series of |x| of period 27 and evaluate the sum
1
1+
32
1
+...00.
52
6. Show that in the interval (0, t)
2
4
sinx = -
cos 2nx
4n2 – 1
Transcribed Image Text:5. Find the Fourier series of |x| of period 27 and evaluate the sum 1 1+ 32 1 +...00. 52 6. Show that in the interval (0, t) 2 4 sinx = - cos 2nx 4n2 – 1
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