Prove the identities Then use them to show that a. sinh 2x = 2 sinh x cosh x. b. cosh 2x = cosh²x + sinh²x. sinh(x + y) = sinh x cosh y + cosh xsinh y, cosh(x + y) = cosh x cosh y + sinh xsinh y.

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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11. Prove the identities
sinh(x + y) = sinh x cosh y + cosh x sinh y,
cosh(x + y) = cosh x cosh y + sinh xsinh y.
Then use them to show that
a. sinh 2x = 2 sinh x cosh x.
b. cosh 2x = cosh²x + sinh²x.
Transcribed Image Text:11. Prove the identities sinh(x + y) = sinh x cosh y + cosh x sinh y, cosh(x + y) = cosh x cosh y + sinh xsinh y. Then use them to show that a. sinh 2x = 2 sinh x cosh x. b. cosh 2x = cosh²x + sinh²x.
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