scipy.special.yn

scipy.special.yn(n, x, out=None) = <ufunc 'yn'>

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

Parameters

narray_like

Order (integer).

xarray_like

Argument (float).

outndarray, optional

Optional output array for the function results

Returns

Yscalar or ndarray

Value of the Bessel function, \(Y_n(x)\).

See also

yv

For real order and real or complex argument.

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.

References

1

Cephes Mathematical Functions Library, http://www.netlib.org/cephes/