# 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 [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/

scipy.special.jve scipy.special.yv