IncompleteBetaInverse

IncompleteBetaInverse(a, b, x, tail=False)

Inverse of the incomplete Beta function.

\forall (a, b) > 0 \quad IncompleteBetaInverse(x; a, b) = \mathrm{B}^{-1}(x/\mathrm{B}(a, b); a, b)

Parameters:
a, bfloat \in \Rset^*_+
xfloat
tailbool, optional

By default, tail is False.

Returns:
resultfloat

  • If tail is False: result = \mathrm{B}^{-1}(x/\mathrm{B}(a, b); a, b).

  • If tail is True: result = 1 - \mathrm{B}^{-1}(x/\mathrm{B}(a, b); b, a).

See also

openturns.SpecFunc.IncompleteBeta
openturns.SpecFunc.RegularizedIncompleteBetaInverse