Let f(x) = cos 2 x + sin 2 x. a. Use the Chain Rule to show
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Let f(x) = cos2 x + sin2 x.
a. Use the Chain Rule to show that f'(x) = 0.
b. Assume that if f' = 0, then f is a constant function. Calculate f(0) and use it with part (a) to explain why cos2 x + sin2 x = 1.
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a b If fx is a constant then the output value must be t...View the full answer
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Related Book For
Calculus Early Transcendentals
ISBN: 978-0321947345
2nd edition
Authors: William L. Briggs, Lyle Cochran, Bernard Gillett
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