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  • is the real part of the complex number.
  • is the imaginary part of the complex number.
  • is the imaginary unit of the complex number.


  • COMPLEXNUM function converts the real and imaginary coefficients into a complex number.
  • A complex number is a combination of a real and an imaginary number.
  • A number which is positive or negative, rational or irrational or decimals are called real numbers.
  • An Imaginary number is a number that when squring it gives a negative result.
  • For e.g. . Because a negative times a negative is positive.
  • A complex number is a number is in the form , where and are real numbers and is the imaginary unit. Where
  • In , here is the real part of the complex number, is the imaginary part of the complex number and is the imaginary unit of a complex number like or .
  • To mention and , we must use the lower case only
  • In a complex number real part is denoted by & imaginary part is denoted by .
  • COMPLEXNUM returns the error value, when and are non-numeric.
  • should be either or , otherwise it shows error value.
  • A Complex number whose real part is zero is said to be purely imaginary.
  • A Complex number whose imaginary part is zero is a real number. In that cases we have to assign '0' for that part.
  1. =COMPLEXNUM(5,2) gives
  2. =COMPLEXNUM(5,2,["j"]) gives


  • The syntax is to calculate COMPLEXNUM in ZOS is
  • is the real part.
  • is the imaginary part.
  • is imaginary unit which is either "i" or "j".
  • E.x: COMPLEXNUM(-1..1,10..11,"j")
Complex Number


COMPLEXNUM(real,imaginary,suffix) rn in sf RESULT
COMPLEXNUM(5,6) 5 6 5+i6
COMPLEXNUM(7,3,"j") 7 3 j 7+j3
COMPLEXNUM(4,0,"i") 4 0 i 4+i0
COMPLEXNUM(0,-4,"i") 0 (-4) i 0-i4
COMPLEXNUM(5,"j") 5 j Error

Related Videos

Complex Numbers

See Also


Complex Numbers