# Chi2inv

Chi2inv-func

## Definition:

computes the inverse of the cdf for the corresponding probabilities in with parameters specified by .

The deviate,, associated with the lower tail probability of the distribution with degrees
of freedom is defined as the solution to

where

## Parameters:

- (input, double)
- the probability, , from the required distribution.
- (input,double)
- the degrees of freedom, , of the distribution, .
- (output, double)
- the deviate,.