Finite Math Examples

$(1, 1)$ , $(1, 2)$ , $(2, 1)$

Step 1

Every point in the range is the value of $y$ for at least one point $x$ in the domain, so this is a surjective function.

Surjective function

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$