Verify that the sequence Un(x) = cos ( (n + n ɛ N form an orthogonal set of functions on [0,1]. That is, prove | Un(x)Um(x)dx = 0, for n + m. %3D (The formula cos(a) cos(b) = (cos(a – b) + cos(a + b)) may be useful). %3D

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.2: Exponential Functions
Problem 58E
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Verify that the sequence
Un(x) = cos ( (n + 5)x
n e N
form an orthogonal set of functions on [0,7]. That is, prove
|
Un(x)Um(x)dx = 0, for n + m.
(The formula cos(a) cos(b) = (cos(a – b) + cos(a + b)) may be useful).
Transcribed Image Text:Verify that the sequence Un(x) = cos ( (n + 5)x n e N form an orthogonal set of functions on [0,7]. That is, prove | Un(x)Um(x)dx = 0, for n + m. (The formula cos(a) cos(b) = (cos(a – b) + cos(a + b)) may be useful).
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