| Spread WPF Documentation > Formula Reference > Formula Functions > BESSELI |
This function calculates the modified Bessel function of the first kind evaluated for purely imaginary arguments.
BESSELI(value,order)
This function has these arguments:
| Argument | Description |
|---|---|
| value | Value at which to evaluate the function |
| order | Number representing the order of the function; if it is not an integer, it is truncated |
If value or order is nonnumeric then a #Value! error is returned. If order is less than 0 then the #NUM! error is returned.
Accepts numeric data for both arguments. Returns numeric data.
BESSELI(A4,D5)
BESSELI(R4C1,R5C4)
BESSELI(1.8,2) gives the result 0.5260402117