SOLUTION: f(x) = 3x and g(x) = x/3 f(g(x)) =?

Algebra ->  Functions -> SOLUTION: f(x) = 3x and g(x) = x/3 f(g(x)) =?      Log On


   

Question 1023535: f(x) = 3x and g(x) = x/3 f(g(x)) =?
Answer by robertb(5830) About Me  (Show Source):
You can put this solution on YOUR website!
f(g(x)) = x, by direct substitution.
Note also that this makes them inverses of each other, along with the fact that g(f(x)) = x.