- Name ______________________________
math/precalc/questb/pcfxinv.htm © '02, A2
- pcfxinv & pcfxINV.
- 1st: Graph f(x), f(x) =
- 2nd: Graph the inverse of f(x), f-1 =
- 3rd: Explain in words, why GRAPHICALLY one is the inverse of the other.
- 4th: Begin with f(x) and ALGEBRAICALLY derive the inverse, f-1.
- pcfxINV: Prove algebraically that f(x) and f -1(x) are inverses by showing:
- f(f -1(x)) = f -1(f(x)) = x.