This function calculates the modified Bessel function of the first kind evaluated for purely imaginary arguments.

Syntax

BESSELI(value,order)

Arguments

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

Remarks

If value or order is nonnumeric then a #Value! error is returned. If order is less than 0 then the #NUM! error is returned.

Data Types

Accepts numeric data for both arguments. Returns numeric data.

Examples

BESSELI(A4,D5)

BESSELI(R4C1,R5C4)

BESSELI(1.8,2) gives the result 0.5260402117

Version Available

This function is available in product version 1.0 or later.

See Also

BESSELJ | BESSELY | Engineering Functions