# mars.tensor.special.yn#

mars.tensor.special.yn(n, x, **kwargs)[source]#

Bessel function of the second kind of integer order and real argument.

Parameters
• n (array_like) – Order (integer).

• z (array_like) – Argument (float).

Returns

Y – Value of the Bessel function, $$Y_n(x)$$.

Return type

ndarray

Notes

Wrapper for the Cephes 1 routine yn.

The function is evaluated by forward recurrence on n, starting with values computed by the Cephes routines y0 and y1. If n = 0 or 1, the routine for y0 or y1 is called directly.

yv