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 Microsoft Excel > Functions > Engineering > BESSELI
 

BESSELI(x, n)

 
 Returns the modified Bessel function evaluated for purely imaginary arguments.

 xThe value at which to evaluate the function.
 nThe order of the function.

 REMARKS
 
  		• This function is only available if you have the Analysis ToolPak add-in installed.
     
  		• If any of the arguments are not numeric, then #VALUE! is returned.
     
  		• If "n" is not an integer, it is truncated.
     
  		• If "n" < 0, then #NUM! is returned.

     EXAMPLES
     
     A
    1=BESSELI(1.5,1) = 0.982
    2=BESSELI(1.5,1.9) = 0.982
    3=BESSELI(-1.5,1) = -0.982
    4=BESSELI(1.5,-1) = #NUM!
    5=BESSELI("some text",1) = #VALUE!
    6=BESSELI(1.5,"some text") = #VALUE!
    		 
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