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 Excel > Functions > Engineering > BESSELK
 

BESSELK(x, n)

 
 Returns the modified Bessel function represented by K(x).

 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 "x" < 0, then #NUM! is returned.
     
  		• If "n" is not an integer, it is truncated.
     
  		• If "n" < 0, then #NUM! is returned.

     EXAMPLES
     
     A
    1=BESSELK(1,1) = 0.602
    2=BESSELK(1,2) = 1.625
    3=BESSELK(2,1) = 0.140
    4=BESSELK(2,2) = 0.254
    5=BESSELK(1.5,1) = 0.277
    6=BESSELK(1.5,1.9) = 0.277
    7=BESSELK(-1.5,1) = #NUM!
    8=BESSELK(1.5,-1) = #NUM!
    9=BESSELK("some text",1) = #VALUE!
    10=BESSELK(1.5,"some text") = #VALUE!
    		 
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