# COMPLEX

## Content

This function converts real and imaginary coefficients into a complex number.

## Syntax

`COMPLEX(realcoeff, imagcoeff, suffix)`

## Arguments

This function has these arguments:

| Argument | Description |
| -------- | ----------- |
| *realcoeff* | Coefficient of the real part of the complex number |
| imagcoeff | Coefficient of the imaginary part of the complex number |
| *suffix* | (Optional) Suffix of the imaginary part of the complex number, may be either "i "or "j". If omitted, "i" is used. |

## Remarks

For the suffix, use lowercase for "i" and "j" to prevent errors.

An error is returned if the real or imaginary coefficients are non-numeric.

## Data Types

Accepts number and string data. Returns string data.

## Examples

`COMPLEX(3,5)`

`COMPLEX(3,5,"j")`