mindspore.ops.bessel_k1

mindspore.ops.bessel_k1(x)

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

$$\begin{array}{r}\begin{array}{l}\\ K_1(x)=\underset{\nu \to 1}{lim}\left(\frac{\pi }{2}\right)\frac{I_{-\nu }(x)-I_{\nu }(x)}{\sin (\nu \pi )}={\int }_0^{\mathrm{\infty }}{e}^{-x\cosh t}\cosh (t)dt\end{array}\end{array}$$

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]