Returns the inverse of the gamma cumulative distribution: if p = GAMMA.DIST(x,...), then GAMMA.INV(p,...) = x.
| Name | Type | Description |
| arg1 | number | The probability associated with the gamma distribution, a number between 0 and 1, inclusive. |
| arg2 | number | The alpha parameter of the distribution, a positive number. |
| arg3 | number | The beta parameter of the distribution, a positive number. If this parameter is equal to 1, the function returns the standard gamma distribution. |