Help plz I will give brainliest
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Mathematics, 21.06.2019 19:50
Prove (a) cosh2(x) β sinh2(x) = 1 and (b) 1 β tanh 2(x) = sech 2(x). solution (a) cosh2(x) β sinh2(x) = ex + eβx 2 2 β 2 = e2x + 2 + eβ2x 4 β = 4 = . (b) we start with the identity proved in part (a): cosh2(x) β sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 β sinh2(x) cosh2(x) = 1 or 1 β tanh 2(x) = .
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Mathematics, 21.06.2019 21:30
Plz hurry evaluate the expression a+b where a=8 and b=19
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Mathematics, 21.06.2019 21:40
Aphrase is shown read the phrase and give me the answer
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Mathematics, 21.06.2019 23:30
Simplify (8x2 β 1 + 2x3) β (7x3 β 3x2 + 1). β5x3 + 11x2 β 2 5x3 β 11x2 + 2 x3 + 2x2 + x3 x3 β 2x2 β x3
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History, 13.07.2019 22:30
History, 13.07.2019 22:30
Biology, 13.07.2019 22:30
Mathematics, 13.07.2019 22:30
Mathematics, 13.07.2019 22:30
Mathematics, 13.07.2019 22:30
Mathematics, 13.07.2019 22:30