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Mathematics, 26.08.2021 17:00 evere11605

Simplify: 4 =(-19,6)
points)
8 9/10
-8 9/10
-17 3/10
17 3/10

Simplify: 4 =(-19,6)
points)
8 9/10
-8 9/10
-17 3/10
17 3/10

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Answers: 3

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Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .

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Simplify: 4 =(-19,6)
points)
8 9/10
-8 9/10
-17 3/10
17 3/10
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