Dik=f (x)=x+2 g (x)=4-2x a. (f o g) (x) b. (g o f) (x) c. (f o g) invers (x) d. (g o f) invers (x)

f(x)= x+2
g(x)= 4-2x

a.   f0g(x)= f (g(x))
              = (4-2x)+2
              =2x-6
b. g0f(x)=  g(f(x))
             = 4-(x+2)
             = 4-x-2
             = x-2