The BESSELI function is one of the engineering functions. It is used to return the modified Bessel function, which is equivalent to the Bessel function evaluated for purely imaginary arguments.
Syntax
BESSELI(x, n)
The BESSELI function has the following arguments:
Argument
Description
x
The value at which to evaluate the function.
n
The order of the Bessel function, a numeric value greater than or equal to 0.