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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, 22.06.2019 00:00
Two consecutive negative integers have a product of 30. what are the integers?
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Mathematics, 22.06.2019 01:30
At store a, erasers are sold individually. the cost y of x erasers is represented by the equation y=0.75x. the costs of erasers at store b are shown in the graph.
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Mathematics, 22.06.2019 02:50
Is (root2 -2)^2 rational or irrational. show the steps and answer fast
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What does 240 halves convert into a whole #...
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