# Interval Notation Calculator

Interval notation is expressing the inequality in terms of interval containing a pair of numbers. These pair represents the starting and end point and the interval tells us whether end points are included or excluded in the number line.

If

**a**and

**b**are given real numbers then they can be expressed by the intervals namely

**Open Interval:**It is represented as $(a, b)$ = $\{ x\ \epsilon\ R\ |\ a < x < b \}$

**Closed Interval:**It is represented as $[a, b]$ = $\{x\ \epsilon\ R\ |\ a \leq x \leq b \}$,

**Half Open Interval:**It is represented as $(a, b]$ = $\{x\ \epsilon\ R\ |\ a < x \leq b \}$ or $[a, b)$ = $\{ x\ \epsilon\ R\ |\ a \leq x < b \}$.

Interval Notation Calculator represents the interval in terms of inequality and plots its graph on number line. The

**( )**braces representing open interval gives open circle and**[ ]**braces representing closed interval gives closed circle on the graph.