Question

(f o g)(x) = x(g o f)(x) = xwrite both domains in interval notation

Answer 1

the fact that both functions are polynomial of degree 1 we get that the domain and range of both functions are the real numbers. In intervalo notation this is:

`\begin{gathered} \text{domain:}(-\infty,\infty) \\ \text{range:}(-\infty,\infty) \end{gathered}`