The difference of 5 times the cube of x cubed and
the quotient of 4 times x and 3

Which of the greatest common gcf of 32 and 48 a 16 b 96 c 8 d 32

What are the relative frequencies to the nearest hundredth of the columns of the two-way table?

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) = .