Question

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

f(x)=\[\frac{ 4 }{ x }\]
g(x)=\[\frac{ 4 }{ x }\]

Answer 1

f((g(x)) = 4 / (4/x) = 4x / 4 = x

now try g((f(x))

Answer 2

?

Answer 3

to find f((g(x)) you replace the x in f(x) by g(x) then simplify