BesselK function
Description
BESSELK(x,n) returns the modified Bessel function of second kind. X is the value at which to evaluate the function, and n is the order of the Bessel function. If n is not an integer, it is truncated.
BESSELK(x,n) returns the modified Bessel function of second kind. X is the value at which to evaluate the function, and n is the order of the Bessel function. If n is not an integer, it is truncated.