mars.tensor.special.gammaincinv#

mars.tensor.special.gammaincinv(a, b, **kwargs)[源代码]#

Inverse to the lower incomplete gamma function with respect to x.

Given an input \(y\) between 0 and 1, returns \(x\) such that \(y = P(a, x)\). Here \(P\) is the regularized lower incomplete gamma function; see gammainc. This is well-defined because the lower incomplete gamma function is monotonic as can be seen from its definition in [dlmf].

参数

  • a (array_like) – Positive parameter

  • y (array_like) – Parameter between 0 and 1, inclusive

返回

Values of the inverse of the lower incomplete gamma function

返回类型

scalar or ndarray

参见

gammainc

regularized lower incomplete gamma function

gammaincc

regularized upper incomplete gamma function

gammainccinv

inverse of the regualizred upper incomplete gamma function with respect to x

引用

dlmf

NIST Digital Library of Mathematical Functions https://dlmf.nist.gov/8.2#E4