Mathematics, 31.03.2021 23:10, Usman458

Please help me this is for a grade

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Mathematics, 21.06.2019 15:00, k3thagoat

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Mathematics, 21.06.2019 19:30, ellarose0731

Hi, can anyone show me how to do this problem? 100 points for this. in advance

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Mathematics, 21.06.2019 19:50, Roshaan8039

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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