Answers: 2
Mathematics, 21.06.2019 19:50
Prove (a) cosh2(x) β sinh2(x) = 1 and (b) 1 β tanh 2(x) = sech 2(x). solution (a) cosh2(x) β sinh2(x) = ex + eβx 2 2 β 2 = e2x + 2 + eβ2x 4 β = 4 = . (b) we start with the identity proved in part (a): cosh2(x) β sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 β sinh2(x) cosh2(x) = 1 or 1 β tanh 2(x) = .
Answers: 3
Mathematics, 21.06.2019 22:00
Serena is making an experiment. for that, she needs 20 grams of a 52% solution of salt. she has two large bottles of salt water: one with 40% and the other with 70% of salt in them. how much of each must she use to make the solution she needs? i am in need of
Answers: 1
Mathematics, 21.06.2019 22:50
What is the ordered pair of mβ after point m (5, 6) is rotated 90Β° counterclockwise?
Answers: 2
45x - 35y= 315 x-intercept: y-intercept:...
Chemistry, 12.02.2020 03:09
Mathematics, 12.02.2020 03:09
Mathematics, 12.02.2020 03:09