Trigonometry Examples

$\log_{2} (x)$

Set the argument in $\log_{2} (x)$ less than or equal to $0$ to find where the expression is undefined.

$x \leq 0$

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 $0$ .

$x \leq 0$

$(- \infty, 0]$