tolong dijawab ya...

f(x) = (x+2)/(3-x)
y = (x+2)/(3-x)
y(3-x) = x+2
3y - xy = x +2
x + xy = 3y - 2
x(1+y) = 3y -2
x = (3y-2)/(1+y)

f'(x) = (3x-2)/(1+x)