# GAMMAINV

## Content

This function returns the inverse of the gamma cumulative distribution.

## Syntax

`GAMMAINV(p, alpha, beta)`

## Arguments

This function has these arguments:

| Argument | Description |
| -------- | ----------- |
| *p* |  [Required] Probability |
| *alpha* |  [Required] Alpha parameter of the distribution |
| *beta* |  [Required] Beta parameter of the distribution |

## Remarks

This function calculates the inverse of the F probability distribution, so if p = GAMMADIST(x,...), then GAMMAINV(p,...) = x.

## Examples

`GAMMAINV(A3,3,4)`
`GAMMAINV(0.8902,R3C8,R3C9)`
`GAMMAINV(0.75,2,3)` gives the result 8.0779035867