Precalculus Examples

$s = \sqrt{t} - 2 t + 6$

Step 1

Set the radicand in $\sqrt{t}$ greater than or equal to $0$ to find where the expression is defined.

$t \geq 0$

Step 2

The domain is all values of $t$ that make the expression defined.

Interval Notation:

$[0, \infty)$

Set-Builder Notation:

${t | t \geq 0}$

Step 3