# 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.

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