Do any one know how to type a very big parenthesis in LaTeX. Since the formula is very big, I used `multline`

environment, in one line, there are many pair of parenthesis by using `\left`

and `\right`

which make them already very big. Between lines, I need some parenthesis bigger than the one given by `\Bigg`

. My intention is to show the following big formula in `multline`

environment:

```
$$
\frac{
e^{-\frac{t \lambda +4}{4 \lambda \nu }}
\left(
e^{\frac{t}{4 \nu }}
\left(
4 \sqrt{\pi } \sqrt{\nu }+1
\right)
\nu \Phi
\left(
\frac{t-\frac{2}{\lambda }}{\sqrt{2} \sqrt{t \nu }}
\right)
\lambda^3
-e^{\frac{t \lambda +8}{4 \lambda \nu }}
\left(
4 \sqrt{\pi } \sqrt{\nu }-1
\right)
\nu
\left(
\Phi
\left(
\frac{t+\frac{2}{\lambda }}{\sqrt{2} \sqrt{t \nu }}
\right)
-1
\right)
\lambda^3
+e^{\frac{1}{\lambda \nu }}
\left(
4 \sqrt{\pi } \lambda^3 \nu^{3/2}
\left(
2 \Phi
\left(
\frac{1}{\sqrt{2} \lambda \sqrt{t \nu }}
\right)
-1
\right)
-e^{\frac{t}{4 \nu }}
\left(
\left(
\lambda
\left(
4 \sqrt{\pi } \sqrt{\nu }-1
\right)
\nu +2
\right)
\lambda^2+2
(\lambda \nu -2)
\Phi
\left(
\frac{\sqrt{\frac{t}{\nu }}}{\sqrt{2}}
\right)
\lambda^2-2
\right)
\right)
\right)
}{4 \lambda }
$$
```

## Best Answer

The ams parenthesis of specific size are typeset by using

`\left`

and`\right`

and putting in an invisible "thing" of a certain height to ensure that they are big enough. Mimicking that, you could do:`\left(\rule{0cm}{2cm}\right.`

to get a left parenthesis of 2cm height. Note that the AMS command also adds a little horizontal space which you might need to put in as well. If you do this often, you could easily define new sizes:Then in your document:

produces:

I recommend also taking a look at Vertically asymmetric size variation for parentheses about vertically centring parentheses.

(

NoteI've assumed that you're using`amsmath`

since you tag it with`amsmath`

and the commands`\big`

and so forth are ones that`amsmath`

produces. If you're using a different package to get these commands, then this solution won't work.)