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Find the sumS = cos(2x) + cos(4x) + cos(6x) + ... + cos(2nx),where n is a positive integer. Express your answer as a product and
Find the sumS = cos(2x) + cos(4x) + cos(6x) + ... + cos(2nx),where n is a positive integer. Express your answer as a product and quotient of trigonometric functions.
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Non-Archimedean Operator Theory
Authors: Toka Diagana, François Ramaroson
1st Edition
331927323X, 9783319273235
