# Math Help - domain

1. ## domain

f^-1(x) =1/4 * e^(x/3)

what is the domain of f^-1

2. Originally Posted by mathseek
f^-1(x) =1/4 * e^(x/3)

what is the domain of f^-1
the domain is the set of all x values for which the function is defined. so what x-values are we allowed to plug into this function? what is the domain of the exponential function?

3. Dear mathseek,

domain means all the x value where the function is defined. It's easier usually to search where the function ISN'T defined.

So the questions: What number cann't you divide by 3 or what number cann't you put up as exponent or what number cann't you multiply by (1/4)?