Choose all correct statements concerning roots of unity.
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Answers: 3
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) = .
Answers: 3
Mathematics, 21.06.2019 21:00
An arithmetic series a consists of consecutive integers that are multiples of 4 what is the sum of the first 9 terms of this sequence if the first term is 0
Answers: 1
Mathematics, 21.06.2019 21:30
Mis the midpoint of rq if rm equals 2x + 5 and mq equals 4x - 9 what is the length of rq
Answers: 1
Mathematics, 20.12.2019 17:31
World Languages, 20.12.2019 17:31
English, 20.12.2019 17:31
Biology, 20.12.2019 17:31
English, 20.12.2019 17:31
Biology, 20.12.2019 17:31