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Excel IMAGINARY Function

Excel IMAGINARY function
Summary 
The Excel IMAGINARY function returns the imaginary coefficient of a complex number given in the form x + yi or x + yj.
Purpose 
Get imaginary coefficient of complex number
Return value 
Imaginary coefficient as number
Syntax 
=IMAGINARY (inumber)
Arguments 
  • inumber - A complex number.
Usage notes 

The Excel IMAGINARY function returns the imaginary coefficient of a complex number in the form x + yi or x + yj. For example:

=IMAGINARY("5+3i") // returns 3

In the example shown, the formula in D6, copied down, is:

=IMAGINARY(B6)

Notes:

  • Only lowercase "j" and "i" are accepted by IMAGINARY. Other values will result in the #NUM error.
Related functions 
Excel COMPLEX function
Excel COMPLEX Function

The Excel COMPLEX function creates a complex number with given real and imaginary coefficients. COMPLEX returns a text result in the form x + yi or x + yj.

Excel IMREAL function
Excel IMREAL Function
The Excel IMREAL function returns the real coefficient of a complex number in the form x + yi or x + yj.
Good links 
Microsoft IMAGINARY function documentation

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