# Manuals/calci/COMPLEXNUMBER

**COMPLEXNUMBER (String)**

- is any complex number.

## Description

- This function is showing the 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 squaring it gives a negative result.
- For e.g. {-4}^2 =16. Because a negative times a negative is positive.
- A complex number is a number is in the form , where a and b are real numbers and i is the imaginary unit.
- Where .
- In , is any complex number.
- 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.When we assigning without real value it is showing "0" for real value in the complex number.
- In the same way it is assigning "0" for imaginary value in the complex number.

## Example

- COMPLEXNUMBER("3+4i") = 3+4ⅈ
- COMPLEXNUMBER("8-12i") = 8-12ⅈ
- COMPLEXNUMBER("43") = 43+0ⅈ
- COMPLEXNUMBER("-6i") = 0-6ⅈ

## Related Videos

## See Also

## References