From GeoGebra Manual
- InverseCauchy( <Median>, <Scale>, <Probability> )
- Computes the inverse of cumulative distribution function of Cauchy distribution at probability p, where the Cauchy distribution is given by median m and scale s.
- In other words, finds t such that P(X ≤ t) = p, where X is Cauchy random variable.
- Probability p must be from [0,1].