You are examining your choices of banks to open a new checking account. Potential costs include monthly maintenance fees, statement copy fees, and .

Write each expression in exponential form and find its value.| ! 2 x 2 x 2 x 2

Why do interests rates on loans to be lower in a weak economy than in a strong one

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) = .