Mathematics, 18.07.2019 16:50 fireman59937
The difference in the average speed of two trains is 16 miles per hour. the slower train takes longer to travel 170 miles than the faster train takes to travel 150 miles. find the speed of the slower train
Answers: 1
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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, 21.06.2019 21:50
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The difference in the average speed of two trains is 16 miles per hour. the slower train takes longe...
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