1. The problem statement, all variables and given/known data posted in title 2. Relevant equations none 3. The attempt at a solution f+g would be (2x^2+1) + (x-1) = 2x^2 + x so the domain for f+g is all real numbers but i dont know how to find the one for the composite. i am still confused as to what a composite function is, please help me!!! thank you!