Finite Math Examples

$\cot (a) = - 500$

Step 1

Set the argument in $\cot (a)$ equal to $π n$ to find where the expression is undefined.

$a = π n$ , for any integer $n$

Step 2

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

Set-Builder Notation:

${a | a \neq π n}$ , for any integer $n$

Step 3