Question

Dik f:R->R dan g:R->R jika f(×)=3-3× dan g(x)=2x rumus (gof)-1(×)=

Answer 1

F(x) = 3 - 3x
3x = 3 - y
x = (3 - y)/2
f⁻¹(x) = (3 - x)/2

g(x) = 2x
x = y/2
g⁻¹(x) = x/2

(g o f)⁻¹(x) = f⁻¹ o g⁻¹
                = (3 - (x/2))/2
                = (6 - x)/4