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IMSUB(inumber1, inumber2)

 
 Returns the difference of two complex numbers in x + yi or x + yj text format.

 inumber1The first complex number.
 inumber2The second complex number.

 REMARKS
 
  		• In Excel 2007 (and later) this function has been removed from the Analysis ToolPak add-in and is available as standard.
     
  		• In Excel 2003 this function is only available when you have the Analysis ToolPak add-in loaded.
     
  		• In Excel 2007 the format returned by this function has been changed so that the imaginary part is displayed in consistent scientific notation.
     
  		• If any of the arguments are not in the form x + yi or x + yj, then #NUM! is returned.
     
  		• You can use the COMPLEX function to convert real and imaginary coefficients into a complex number.

     EXAMPLES
     
     A
    1=IMSUB("13+4i","5+3i") = 8+i
    2=IMSUB("13+4i","i") = 13+3i
    3=IMSUB("5+3i","13+4i") = -8-i
    4=IMSUB("5+3i","5+3i") = 0
    5=IMSUB("some text","13+4i") = #NUM!
    6=IMSUB("5+3i","some text") = #NUM!
    		 
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