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 Microsoft Excel > Functions > Engineering > ERF
 

ERF(lower_limit [,upper_limit])

 
 Returns the error function integrated between lower_limit and upper_limit.

 lower_limitThe lower bound for integrating ERF.
 upper_limitThe upper bound for integrating ERF.

 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 "lower_limit" < 0, then #NUM! is returned.
     
  		• If "upper_limit" < 0, then #NUM! is returned.
     
  		• If "upper_limit" is left blank, then it integrates between zero and "lower_limit".

     EXAMPLES
     
     A
    1=ERF(0.745) = 0.708
    2=ERF(0,1) = 0.843
    3=ERF(1) = 0.843
    4=ERF(1,) = 0.843
    5=ERF(1,5) = 0.157
    6=ERF(1,0) = -0.843
    7=ERF(,2) = #N/A
    8=ERF(1,-5) = #NUM!
    9=ERF(-1,5) = #NUM!
    		 
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