SOLUTION: f(x) = 1/x-2 g(x) = 4/x Find (GoF) (x)

Algebra ->  Functions -> SOLUTION: f(x) = 1/x-2 g(x) = 4/x Find (GoF) (x)      Log On


   

Question 224508: f(x) = 1/x-2
g(x) = 4/x
Find (GoF) (x)
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
(gof)(x) means g[f(x)], so you substitute the f(x) into the g formula.

g%28x%29+=+4%2Fx
g%28f%28x%29%29=4%2F%28f%28x%29%29
g%28f%28x%29%29=4%2F%281%2F%28x-2%29%29
g%28f%28x%29%29=4%2A%28%28x-2%29%2F1%29+
g%28f%28x%29%29=+4x-8

R^2