ANSWERS: 5

f(x)=(x+1)/(x3) g(x)=x+3 f(g(x))=f(x+3) f(g(x))=((x+3)+1)/((x+3)3) f(g(x))=(x+4)/x.

Substitute: f(g(x)) = (x + 3) + [1/(x+3)]  3 Now, simplify.

f(g(x))=(x+3+1)/(x+33) =(x+4)/x

There is an ambiguity in your notation. I think that you mean: f(x)=(x+1)/(x3) but I think that you have written: f(x)= x + (1/x) 3 Fortunatly, people have answered it both ways.

Andrew Jackson.
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