Barrons AP Calculus

FUNCTIONS

PROPERTIES

INVERSE PROPERTIES

f   (x) =   e x and f −1(x) =   ln  x   are inverses    of  each    other:

f   −1(f(x))    =   f   (f −1(x))   =   x;

ln  e x =   e ln x  =   x   (x >    0).

GRAPHS