Symbol | Open interval |
---|---|

Type of symbol | Mathematics |

Package (requirement) | No |

Argument | Yes |

Latex command | `\left(arg1,arg2\right)` |

Example | `\left(arg1,arg2\right)` → (arg1,arg2) |

You can use the keyboard parenthesis key `Shift`

+ `(, )`

to type open interval in a latex document.

```
\documentclass{article}
\begin{document}
$$ (a , \; b)$$
$$ (x_1 , \; x_2)$$
$$ (\frac{1}{x_2} , \frac{1}{x_1})$$
\end{document}
```

**Output :**

In the above quote, you will see that the size of the parenthesis is not adjusting properly when using fractions at open intervals. In this case, you need to use the `\left(arg1,arg2\right)`

command by which the size of the parenthesis will be automatically adjusted as the size of the fraction.

```
\documentclass{article}
\begin{document}
$$ \left(\frac{1}{x_2} , \frac{1}{x_1}\right)$$
$$ \left(\frac{1}{a_2} , \frac{1}{b_1}\right)$$
\end{document}
```

**Output :**