f:R ➡ R dan g:R ➡R dirumuskan dengan f(x)= x+2 per x , x tidak sama dengan 0 dan g(x)=x+3. nilai (g bundar f)min 1 (2)=....

f(x) = (x + 2)/x dan g(x) = x + 3
gof(x) = g(f(x)) = g((x + 2)/x)
= (x + 2)/x + 3
= (x + 2 + 3x)/x
gof(x) = y = (4x + 2)/x
xy = 4x + 2
xy - 4x = 2
x(y - 4) = 2
x = 2/(y - 4)
gof^-1(x) = 2/(x - 4)
gof^-1(2) = 2/(2 - 4) = -1