http://php.net/manual/en/function.stats-cdf-exponential.php

The function is described as follows:

Returns to the cumulative distribution function The value of the parameters (par1 and par2) are determined by which.

Here about "one of its parameters" and "distribution function" everything is clear and clearly described how to get them.

But about its inverse in general is not clear. What is it?

  1. Reverse function? Any cunning mathematical term applicable to distributions (googled - did not find it)?
  2. Banal copy-paste school when writing documentation?

    0