Question

If f(g(x))=x and f(x)= 3x-4, find g(x).

Answer 1

Hi,
F [g(x)] means substituting g(x) instead of x in f(x) . So before substituting g(x)
f(x) is like this ... 3x-4
after substituting g(x)
f[g(x)] = 3[g(x) - 4 = x

Now u should be able to figure out wt's g(x) is..

Hope this will help ya ...!

Answer 2

so it's (x+4)/3 then?

Answer 3

yep ... u've got it ! and srry for the late reply