Dik: f(x) = 3x+5 g(x) = 2x Tentukan (f o g) invers (2) . Mohon bantuannya .

f o g (x) = 3 (2x) + 5
f o g (x) = 6x + 5

Fungsi Inverse
[[f o g (x)] - 5]/6 = x
[f o g]^-1 (x) = (x - 5)/6
[f o g]^-1 (2) = (2-5)/6 = -1/2