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Mathematics, 21.06.2019 19:50
Prove (a) cosh2(x) ā sinh2(x) = 1 and (b) 1 ā tanh 2(x) = sech 2(x). solution (a) cosh2(x) ā sinh2(x) = ex + eāx 2 2 ā 2 = e2x + 2 + eā2x 4 ā = 4 = . (b) we start with the identity proved in part (a): cosh2(x) ā sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 ā sinh2(x) cosh2(x) = 1 or 1 ā tanh 2(x) = .
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Mathematics, 22.06.2019 00:50
E. which of the following is not a possible probability? a. 25/100 b. 1.25 c. 1 d. 0
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Mathematics, 22.06.2019 02:30
Find the value of x to the nearest tenth. a. 4.5 b. 5.4 c. 6.3 d. 7.2
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Mathematics, 22.06.2019 03:30
3a + 5b - 7 = 0 a - 2b - 4 = 0 solve the system by the elimination method. check your work {(96/11, -5/11)} {(34/11, -5/11)} {(32/33, 5/11)}
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Solve for x show all work -2Ć + 5=4Ć -7...
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