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Which one of the following is not equal to cos 4x for all real values of x? A sin? 2x – cos? 2x B 2 cos? 2x – 1 1- 2 sin? 2x D (cos 2x – sin 2x)(cos 2x+ sin 2x) E cos 3x cos x – sin 3x sin x

Which one of the following is not equal to cos 4x for all real values of x? A sin? 2x – cos? 2x B 2 cos? 2x – 1 1- 2 sin? 2x D (cos 2x – sin 2x)(cos 2x+ sin 2x) E cos 3x cos x – sin 3x sin x

Calculus: Early Transcendentals
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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Which one of the following is not equal to cos 4x for all real values of x? A sin? 2x – cos? 2x B 2 cos? 2x – 1 1- 2 sin? 2x D (cos 2x – sin 2x)(cos 2x+ sin 2x) E cos 3x cos x – sin 3x sin x
Transcribed Image Text:Which one of the following is not equal to cos 4x for all real values of x? A sin? 2x – cos? 2x B 2 cos? 2x – 1 1- 2 sin? 2x D (cos 2x – sin 2x)(cos 2x+ sin 2x) E cos 3x cos x – sin 3x sin x
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