BESSELK

Definition: BESSELK is a function that returns the modified Bessel function of the second kind for a complex number.

Syntax: =BESSELK(x, n)

Situation: This formula is suitable when you need to calculate the modified Bessel function of the second kind for a complex number.

Example: If you have a complex number 4+3i, the modified Bessel function of the second kind can be found using the formula =BESSELK(4+3i, 2), which returns a value of 0.0207+0.0978i.