What would you substitute the integrand with in order to evaluate cos(29x) cos(31x) dx? (Do not evaluate the ntegral.)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 70E
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What would you substitute the integrand with in order to evaluate
cos(29x) cos(31x) dx? (Do not evaluate the
integral.)
Transcribed Image Text:What would you substitute the integrand with in order to evaluate cos(29x) cos(31x) dx? (Do not evaluate the integral.)
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