Precalculus Examples

$f (x) = {\begin{cases} \sqrt{4 + x}, x < 0 \\ \sqrt{4 - x}, x \geq 0 \end{cases}$

Step 1

Graph.

$f (x) = {\begin{cases} \sqrt{4 + x} & x < 0 \\ \sqrt{4 - x} & x \geq 0 \end{cases}$

Step 2