Establish the (Green's function) identity, COS 2 cos (nux) cos (nity) n²π² n=1 = 1¸ x² −x+y² −y−|x−y| + 3 2

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.2: Trigonometric Equations
Problem 105E
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Subject-advance maths

Establish the (Green's function) identity,
cos (nπx) cos (nπyY)
n²π²
∞
2Σ
n=1
=
1¸ x² −x+y² −y-|x-y|
+
3
2
Transcribed Image Text:Establish the (Green's function) identity, cos (nπx) cos (nπyY) n²π² ∞ 2Σ n=1 = 1¸ x² −x+y² −y-|x-y| + 3 2
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