Answers: 1
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) = .
Answers: 3
Mathematics, 21.06.2019 21:30
Which of the following shows the length of the third side, in inches, of the triangle below
Answers: 2
What is 4 1/3 as a decimal...
Mathematics, 16.03.2020 17:56
English, 16.03.2020 17:56
Biology, 16.03.2020 17:56
Mathematics, 16.03.2020 17:56
Computers and Technology, 16.03.2020 17:56
History, 16.03.2020 17:56
History, 16.03.2020 17:56
Biology, 16.03.2020 17:56