Show that - if W= cos (メ+y)+ Sin(メ-y) Wメメ Wyy ニ

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 21E
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|- if
W = COS (* +y) + Sin(x-y)
Show that
Wxx
Wyy
Transcribed Image Text:Home work |- if W = COS (* +y) + Sin(x-y) Show that Wxx Wyy
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