# 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.