Question

carilah invers (f-1) dari 2x+1/x-3

Answer 1

F(x) = (2x+1) / (x-3)
f⁻¹ { (2x+1)/(x-3)} = x

misal 
y = (2x+1) / (x-3)
2x +1 = y (x-3)
2x + 1 = xy - 3y
2x - xy = -3y -1
x(2-y) = -3y -1
x = (-3y -1)/(-y+2)
atau
x = (3y +1)/(y-2)
f⁻¹(x)= (3x +1)/(x-2)|....