 Name ______________________________

www.mathnstuff.com/
math/precalc/questb/pcfxinv.htm © '02, A^{2}
 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.