1. Show that the series COS X 1 + cos 3x 3 is convergent whenever x is not an integer multiple of . [Hint: Use the trigonometric identity cos 5x 5 +. 2 cos A sin B = sin(A + B) – sin(A - B).]
1. Show that the series COS X 1 + cos 3x 3 is convergent whenever x is not an integer multiple of . [Hint: Use the trigonometric identity cos 5x 5 +. 2 cos A sin B = sin(A + B) – sin(A - B).]
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.3: The Natural Exponential Function
Problem 56E
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