# scipy.special.k1¶

scipy.special.k1(x) = <ufunc 'k1'>

Modified Bessel function of the second kind of order 1, $$K_1(x)$$.

Parameters: x : array_like Argument (float) K : ndarray Value of the modified Bessel function K of order 1 at x.

Notes

The range is partitioned into the two intervals [0, 2] and (2, infinity). Chebyshev polynomial expansions are employed in each interval.

This function is a wrapper for the Cephes [1] routine k1.

References

 [1] (1, 2) Cephes Mathematical Functions Library, http://www.netlib.org/cephes/

#### Previous topic

scipy.special.k0e

#### Next topic

scipy.special.k1e