mindspore.ops.bessel_k1

mindspore.ops.bessel_k1(x)

Computes the first order modified Bessel function of the second kind for each element input.

\[\begin{split}\begin{array}{ll} \\ K_{1}(x)=\lim_{\nu \to 1} \left(\frac{\pi}{2}\right) \frac{I_{-\nu}(x)- I_{\nu}(x)}{\sin (\nu \pi)} = \int_{0}^{\infty} e^{-x \cosh t} \cosh (t) d t \end{array}\end{split}\]

Parameters

x (Tensor) – The input tensor.

Returns

Tensor

Supported Platforms:

GPU CPU

Examples

>>> import mindspore
>>> x = mindspore.tensor([0.5, 1., 2., 4.])
>>> output = mindspore.ops.bessel_k1(x)
>>> print(output)
[1.65644112  0.60190723  0.13986588  0.0124835]