BESSELJ

Returns the Bessel function.

If this function is not available, run the Setup program to install the Analysis ToolPak. After you install the Analysis ToolPak, you must enable it by using the Add-Ins command on the Tools menu.

Syntax

BESSELJ(x,n)

X   is the value at which to evaluate the function.

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

Remarks

• If x is nonnumeric, BESSELJ returns the #VALUE! error value.
• If n is nonnumeric, BESSELJ returns the #VALUE! error value.
• If n < 0, BESSELJ returns the #NUM! error value.
• The n-th order Bessel function of the variable x is:

  

  where:

  

  is the Gamma function.

Example

BESSELJ(1.9, 2) equals 0.329926