hi guest!
f(x)=x+2x−2
To find the inverse, you can first replace f(x) for y. y=x+2x−2
1. we replace the x with y. x=y+2y−2
2. cross multiply:
x(y−2)=y+2
xy−2x=y+2
xy−y=2x+2
y(x−1)=2x+2
3. divide both sides by x-1: y=2x+2x−1
And that's the answer! y=2x+2x−1
i hope this helped you!
:)
PS. here's a good youtube video about finding inverses! https://youtu.be/2zeYEx4eTdc?t=505