SpecFunc_RegularizedIncompleteGammaInverse¶

SpecFunc_RegularizedIncompleteGammaInverse(a, x, tail=False)¶

Inverse of the regularized incomplete Gamma function.

$\forall x \in \Rset, \quad RegularizedIncompleteGammaInverse(a, x) = \mathrm{P}^{-1}(a, x)$

Parameters:

a : float $\in \Rset^*_+$

x : float $\in [0, 1]$

tail : bool, optional

By default, tail is False.

Returns:

result : float

If tail is False: $result = \mathrm{P}^{-1}(a, x)$ .

If tail is True: $result = \mathrm{P}^{-1}(a, 1-x)$ .

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