The modified Bessel function of the second kind of *z* in Math. A solution of the differential equation

The second linearly independent solution of this equation for integer order is besselI.

Real part on the real axis:

Imaginary part on the real axis:

Real part on the imaginary axis:

Imaginary part on the imaginary axis:

Real part on the complex plane:

Imaginary part on the complex plane:

Absolute value on the complex plane:

Related functions: besselI

Function category: Bessel functions