I. Verify the following identities: 1. cosh x- sinh x = e* 2. sinh(-x) = –sinh x 3. cosh(-x) = cosh x

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter2: Equations And Inequalities
Section2.1: Equations
Problem 68E
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Homework:
I. Verify the following identities:
1. cosh x– sinh x = e*
2. sinh(-x) =- sinh x
3. cosh(-x) = cosh x
4. sinh(x+ y) = sinh x cosh y + cosh x sinh y
5. cosh(x+ y) = cosh x cosh y + sinh xsinh y
tanh x+ tanh y
1+ tanh x tanh y
6. tanh(x+ y) =
7. (cosh x+ sinh x)" = cosh nx + sinh nx for every positive integer n.
Transcribed Image Text:Homework: I. Verify the following identities: 1. cosh x– sinh x = e* 2. sinh(-x) =- sinh x 3. cosh(-x) = cosh x 4. sinh(x+ y) = sinh x cosh y + cosh x sinh y 5. cosh(x+ y) = cosh x cosh y + sinh xsinh y tanh x+ tanh y 1+ tanh x tanh y 6. tanh(x+ y) = 7. (cosh x+ sinh x)" = cosh nx + sinh nx for every positive integer n.
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