1. If f(x) and g(x) are inverses of one another, which of the following must be true?
a) (f. f)(x)=x
b) (g. f)(x)=x
c) (f. f^-1)(x)=x
d) two of the above
e) all of the above

2. Given f(x) =1/x-1 and g(x) = squaroot log(2x)
Determine (f. g)(x) and (f divide by g)(x)
State domain of each new function.