# How do you know when to use brackets or parenthesis in finding domain or range?

##### 1 Answer

#### Answer

#### Answer:

#### Explanation

#### Explanation:

#### Answer:

Please see below.

#### Explanation:

Use a bracket (sometimes called a square bracket) to indicate that the endpoint is included in the interval, a parenthesis (sometimes called a round bracket) to indicate that it is not.

Brackets are like inequalities that say "or equal"

parentheses are like strict inequalities.

People sometimes say this is

People sometimes say this is

Of course, mixed intervals

The symbols

Quick examples:

Domain of

Domain of

Describe your changes (optional) 200