Finite Math Examples

$\sqrt{r} + 5$

Step 1

Set the radicand in $\sqrt{r}$ less than $0$ to find where the expression is undefined.

$r < 0$

Step 2

The equation is undefined where the denominator equals $0$ , the argument of a square root is less than $0$ , or the argument of a logarithm is less than or equal to $0$ .

$r < 0$

$(- \infty, 0)$

Step 3