1) f*g(x)
=f(12/x+3)
=(12/x+3)/(12/x+3)+6
=6
Domain of composite function f*g = domain of g = (minus infinity to plus infinity) exclude x=0
I need help finding the domain of the composite function f*g
1. f(x)= x/x+6, g(x)= 12/x+3
2. f(x)= 4x+24, g(x)= x+9
I also need help finding the domain for
f-g
3. f(x)=6x-3 g(x)= 4x-5