Check my answer? Inverse functions?

Question

anonymous · Answer

I think they're inverse functions, can anyone confirm?

imtiaz7 · Answer

yes! let me solve it

mathmate · Answer

There are two steps to find the inverse:
1. switch between x and y (use y to replace f(x), if necessary)
2. solve for y in terms of x.

You don't have to find the inverse to know if f(x) and g(x) are inverses of each other.  Using one of the properties of inverse, 
we have
f(g(x))=x, or 
g(f(x))=x.
If the results are not x, then they are not inverses of each other.
This is an easier way to solve this particular problem.

mathmate · Answer

@JoeJoldin 
You said check your answer.  So what is your answer, and how did you do it?

imtiaz7 · Answer

(fog)x=(gof)x then they are inverse of eachother so
after solving i concluded that they arnt

anonymous · Answer

@Imtiaz7 Ah shoot guess I was wrong then :/ @mathmate I'll try again on the next question