Someone help for Brainiest please
Which of the following is a rational number?
square...
Mathematics, 19.11.2020 01:00 shawn3003
Someone help for Brainiest please
Which of the following is a rational number?
square root of 2, square root of 3, square root of 4, and square root of 5
square root of 2
square root of 3
square root of 4
square root of 5
Answers: 3
Mathematics, 21.06.2019 19:50, Roshaan8039
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
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