SciPy

scipy.special.yn

scipy.special.yn(n, x) = <ufunc 'yn'>

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 : 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 [R494] 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

[R494](1, 2) Cephes Mathematical Functions Library, http://www.netlib.org/cephes/index.html

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