For the integral over [0, π], we have: π an (1) sin(x) x cos (nx)dx (using symmetry of integrand) = -sin (¹ sin 2 sin (x) × cos (nx) dx 2 ( ²17 ) by parts) J në 2 2 n në 2 (integrating

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Jj5.

How we doing integration by part to obtain the last equation? Explain with details 

 

For the integral over [0, π], we have:
π
an
(7) sin(x) = cos (nx)dx
2
2
(²) f sin (x) x cos (nx) dx
(using symmetry of integrand) =
sin (-)-sin (7)
2 2
2
n
(²/1)
by parts)
(integrating
Transcribed Image Text:For the integral over [0, π], we have: π an (7) sin(x) = cos (nx)dx 2 2 (²) f sin (x) x cos (nx) dx (using symmetry of integrand) = sin (-)-sin (7) 2 2 2 n (²/1) by parts) (integrating
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