Homework help asap please:
f(x) = 3/x-4
g(x) =(3/x)+4
Find f(g(x)) and g(f(x)), then find the f^-1(x) and check using f(f^-1(x) =x and f^-1(f(x) =x

Question

Homework help asap please: 
f(x) = 3/x-4
g(x) =(3/x)+4
Find f(g(x)) and g(f(x)), then find the f^-1(x) and check using f(f^-1(x) =x and f^-1(f(x) =x

ellecullen · Answer

@Mr_Perfection_xD

ellecullen · Answer

@dan815

ellecullen · Answer

@ChantySquirrel1129**

chantysquirrel1129** · Answer

Are you in Connexus?

ellecullen · Answer

no, I not. I'm simply stumped on this question.

ellecullen · Answer

I have tried solving this one many times, but its not working out.

chantysquirrel1129** · Answer

I don't think I could be of much help here...I'm practically useless here :/

chantysquirrel1129** · Answer

try iambatman c:

ellecullen · Answer

@iambatman , can you please help me with my homework question

anonymous · Answer

f(g(x)) means you take the function g(x) and plug it into the x of the function f(x), so for example if I have $$f(x) = 3x^2+5$$ and $$g(x) = 9x+2$$ and we have to find f(g(x)) we take g(x) and plug it into the x of f(x) so we get $$f(g(x)) = 3(9x+2)^2+5$$ and then you simplify etc..

anonymous · Answer

And the $$f^{-1}(x)$$ implies inverse, to do that we can follow these steps: 
Replace f(x) with y
Switch x's and y's, so put x where y is and y where x is (originally).
Solve for y
Replace y with f^-1(x)

ellecullen · Answer

the lasttime I tried the problem, I had f(g(x) = 3/((3/x) +4) -4