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