This is only if you have a laptop. Download it, answer it, and then submit id back please. AGAIN, THIS IS ONLY IF YOU HAVE A LAPTOP.

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) = .

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x

Select the point that is a solution to the system of inequalities. y< =-x+3 y=x^(2)-3x