mars.tensor.special.polygamma¶
- mars.tensor.special.polygamma(a, b, **kwargs)[源代码]¶
Polygamma functions.
Defined as \(\psi^{(n)}(x)\) where \(\psi\) is the digamma function. See [dlmf] for details.
- 参数
n (array_like) – The order of the derivative of the digamma function; must be integral
x (array_like) – Real valued input
- 返回
Function results
- 返回类型
ndarray
参见
引用
- dlmf
NIST, Digital Library of Mathematical Functions, https://dlmf.nist.gov/5.15