BESSELI()
BESSELI(float $x, int $ord) : float|string
BESSELI.
Returns the modified Bessel function In(x), which is equivalent to the Bessel function evaluated for purely imaginary arguments
Excel Function: BESSELI(x,ord)
Parameters
| float | $x | The value at which to evaluate the function. If x is nonnumeric, BESSELI returns the #VALUE! error value. |
| int | $ord | The order of the Bessel function. If ord is not an integer, it is truncated. If $ord is nonnumeric, BESSELI returns the #VALUE! error value. If $ord < 0, BESSELI returns the #NUM! error value. |
Returns
float|string —Result, or a string containing an error