mindspore.ops.bessel_j1
- mindspore.ops.bessel_j1(x)[source]
Computes Bessel function of the first kind, order 1 element-wise.
The formula is defined as:
\[\begin{split}\begin{array}{ll} \\ J_{1}(x) = \frac{1}{\pi} \int_{0}^{\pi} \cos (x \sin \theta- \theta) d \theta =\sum_{m=0}^{\infty} \frac{(-1)^{m} x^{2 m+1}}{2^{2 m+1} m !(m+1) !} \end{array}\end{split}\]- Parameters
x (Tensor) – The input tensor. The data type must be float16, float32 or float64.
- Returns
Tensor, has the same shape and dtype as the x.
- Raises
- Supported Platforms:
GPU
CPU
Examples
>>> import mindspore >>> import numpy as np >>> from mindspore import Tensor, ops >>> x = Tensor(np.array([0.5, 1., 2., 4.]), mindspore.float32) >>> output = ops.bessel_j1(x) >>> print(output) [0.24226846 0.44005059 0.57672481 -0.06604333]