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Mathematics, 23.07.2019 11:50 Savageman9509
Problem page debra finished her chemistry assignment in 15 hours. then she completed her history assignment in 34 hours. what was the total amount of time debra spent doing these two assignments?
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Mathematics, 21.06.2019 19:50
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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Mathematics, 22.06.2019 00:10
What 8/12+8/11 in another way than and improper fraction
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Problem page debra finished her chemistry assignment in 15 hours. then she completed her history ass...
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