Numerical Analysis
Numerical Analysis
3rd Edition
ISBN: 9780134696454
Author: Sauer, Tim
Publisher: Pearson,
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Chapter 11.1, Problem 6E

(a) Prove the trigonometric formula cos ( x + y ) + cos ( x y ) = 2 cos x cos y for any x, y. (b) Show that the columns of are eigenvectors of the matrix T in (11.5), and identify the eigenvalues. (c) Show that the columns of C T

are unit vectors.

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