Answer
The domain of every rational function is the set of all real numbers; false.
Work Step by Step
All rational functions can be expressed as $f\left( x \right)=\frac{p\left( x \right)}{q\left( x \right)},$ where p and q are polynomial functions and $q\left( x \right)\ne 0$.
So, the domain of a rational function is the set of all real numbers except for the x-values that make the denominator zero.
