mars.tensor.special.hankel2¶
- mars.tensor.special.hankel2(v, z, **kwargs)[源代码]¶
Hankel function of the second kind
- 参数
v (array_like) – Order (float).
z (array_like) – Argument (float or complex).
- 返回
out
- 返回类型
Values of the Hankel function of the second kind.
提示
A wrapper for the AMOS 1 routine zbesh, which carries out the computation using the relation,
\[H^{(2)}_v(z) = -\frac{2}{\imath\pi} \exp(\imath \pi v/2) K_v(z \exp(\imath\pi/2))\]where \(K_v\) is the modified Bessel function of the second kind. For negative orders, the relation
\[H^{(2)}_{-v}(z) = H^{(2)}_v(z) \exp(-\imath\pi v)\]is used.
参见
hankel2ethis function with leading exponential behavior stripped off.
引用
- 1
Donald E. Amos, “AMOS, A Portable Package for Bessel Functions of a Complex Argument and Nonnegative Order”, http://netlib.org/amos/