Jika f(x)=(x+2)/(2x-7), x =/= 7/2 dan g(x)=(3x-2)/(x+3), x

Jika f(x)=(x+2)/(2x-7), x =/= 7/2 dan g(x)=(3x-2)/(x+3), x =/=-3 ,tentukan : a. (g o f)^(-1)(1) b. (f^(-1) o g^(-1))(-2)