Module « scipy.special »

Fonction ynp_zeros - module scipy.special

Signature de la fonction ynp_zeros

def ynp_zeros(n, nt) 

Description

ynp_zeros.__doc__

Compute zeros of integer-order Bessel function derivatives Yn'(x).

    Compute `nt` zeros of the functions :math:`Y_n'(x)` on the
    interval :math:`(0, \infty)`. The zeros are returned in ascending
    order.

    Parameters
    ----------
    n : int
        Order of Bessel function
    nt : int
        Number of zeros to return

    See Also
    --------
    yvp

    References
    ----------
    .. [1] Zhang, Shanjie and Jin, Jianming. "Computation of Special
           Functions", John Wiley and Sons, 1996, chapter 5.
           https://people.sc.fsu.edu/~jburkardt/f_src/special_functions/special_functions.html

    Examples
    --------
    >>> import scipy.special as sc

    We can check that we are getting approximations of the zeros by
    evaluating them with `yvp`.

    >>> n = 2
    >>> x = sc.ynp_zeros(n, 3)
    >>> x
    array([ 5.00258293,  8.3507247 , 11.57419547])
    >>> sc.yvp(n, x)
    array([ 2.22044605e-16, -3.33066907e-16,  2.94902991e-16])