# BESSELI

### Description

Returns the modified Bessel function, which is equivalent to the Bessel function evaluated for purely imaginary arguments.

### Sample Usage

### Syntax

BESSELI(X, N)

The BESSELI function syntax has the following arguments:

X Required. The value at which to evaluate the function.

N Required. The order of the Bessel function. If n is not an integer, it is truncated.

### Notes

If x is nonnumeric, BESSELI returns the #VALUE! error value.

If n is nonnumeric, BESSELI returns the #VALUE! error value.

If n < 0, BESSELI returns the #NUM! error value.

The n-th order modified Bessel function of the variable x is:

### In order to use the BESSELI formula, start with your edited Excellentable:

### Then type in the BESSELI formula in the area you would like to display the outcome:

### By adding the values you would like to calculate the BESSELI formula for, Excellentable will generate the outcome: