mindspore.ops.BesselY1

class mindspore.ops.BesselY1[source]

Computes Bessel function of the second kind, order 1 element-wise.

The formula is defined as:

\[\begin{split}\begin{array}{ll} \\ Y_{1}(x)=\lim_{n \to 1} \frac{J_{n}(x) \cos n \pi-J_{-n}(x)}{\sin n \pi} \end{array}\end{split}\]

where \(J_{1}\) is Bessel function of the first kind, order 1.

Warning

This is an experimental API that is subject to change or deletion.

Inputs:

x (Tensor) - The input tensor. Data type must be float16, float32 or float64.

Outputs:

Tensor, has the same shape as x.

Raises: TypeError – If x is not a Tensor of float16, float32, float64.

Supported Platforms:: GPU CPU

Examples

>>> import mindspore
>>> import numpy as np
>>> from mindspore import Tensor, ops
>>> bessel_y1 = ops.BesselY1()
>>> x = Tensor(np.array([0.5, 1., 2., 4.]), mindspore.float32)
>>> output = bessel_y1(x)
>>> print(output)
[-1.47147239  -0.78121282  -0.10703243  0.39792571]