Sample Problems
Lecture Notes Inverse Functions page 3 c) f (x) = x+4 3x 5. Solution: First we drop the function notation and write y instead of f (x). Then we solve for x and –nally, swap x and y. y = x+4 3x 5 multiply by 3x 5 y(3x 5) = x+4 distribute 3xy 5y = x+4 add 5...