jawab menggunakan cara!

a. (gof) (x) =2(x+3) - 1
= 2x + 6 - 1
= 2x + 5

f^-1 (x) = x - 3
g^-1 (x) = x + 1 / 2

b. (gof)^-1 (x) = (f^-1 o g^-1 )
= x + 1 / 2 -3
= x + 1 - 6 / 2
= x - 5 / 2