Precalculus Examples

$x < 5$ , $x > - 4$

The intersection consists of the elements that are contained in all of the intervals.

$- 4 < x < 5$

interval notation: $(- 4, 5)$

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[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]