jika f(x) = -4x + 2 maka f pangkat-1 (x+1)=

f(x)= -4x+2
y=-4x+2
4x=2-y
x=(2-y)/4
f^-1 (x) = (2-x)/4
f^-1 (x+1) = (2-(x+1))/4
f^-1 (x+1) = (1-x)/4