Question

Confirm that f and g are inverses by showing that f(g(x)) = x and g(f(x)) = x.

f(x) = x-7/x+3
g(x) = -3x-7/x-1

Answer 1

just sub them and simplify them........

Answer 2

I'm having difficulty because I'm subbing 2 fractions into one fraction.

Answer 3

where you given g(x) and f(x)

Answer 4

f(x) = x-7/x+3 g(x) = -3x-7/x-1

Answer 5

I've gotten this so far proving f(x):
f(x) = (-3x-7/x-1)-7 / (-3x-7/x-1)+3

Answer 6

which one are you doing first? f(g(x)) or g(f(x))?