e) EE6+) i+l

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 17E
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Calculate the double sum without expanding any sum.

Θ ΣΣ+)
i+1
i=1
j=i
Transcribed Image Text:Θ ΣΣ+) i+1 i=1 j=i
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