Difference Between Open Interval and Closed Interval

The below table represents the difference between an open interval and a closed interval.

Characteristics

Open Interval

Closed Interval

Definition

An interval that does not include the endpoints is called an open interval.

An interval that includes the endpoints is called a closed interval.

Brackets

Open interval uses parenthesis.

Closed interval uses square brackets.

Representation

It is represented as (a, b).

It is represented as [a, b].

Example

An example of open interval is 2 < x < 9.

An example of closed interval is 2 ≤ x ≤ 9.

Number Line Representation

An open interval is represented as a circle at the endpoints in a number Line.

A closed interval is represented as a filled circle at endpoints in a number Line.

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Open Interval and Closed Interval

A closed interval includes its endpoints and is enclosed under square brackets. An open interval does not include its endpoints and is enclosed under parenthesis. In this article, we will explore the difference between an open interval and a closed interval, along with the open interval and closed interval definitions. Let’s start our learning on the topic “Difference Between an Open Interval and a Closed Interval”.

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