# IMSUB function: Description, Usage, Syntax, Examples and Explanation

What is IMSUB function in Excel?IMSUB function is one of Engineering functions in Microsoft Excel that returns the difference of two complex numbers in x + yi or x + yj text format.

## Syntax of IMSUB function

IMSUB(inumber1, inumber2)

The IMSUB function syntax has the following arguments:

• Inumber1: The complex number from which to subtract inumber2.
• Inumber2: The complex number to subtract from inumber1.

## IMSUB formula explanation

• Use COMPLEX to convert real and imaginary coefficients into a complex number.
• The difference of two complex numbers is: ## Example of IMSUB function

Steps to follow:

1. Open a new Excel worksheet.

2. Copy data in the following table below and paste it in cell A1

Note: For formulas to show results, select them, press F2 key on your keyboard and then press Enter.

You can adjust the column widths to see all the data, if  need be.

 Formula Description Result =IMSUB(“13+4i”,”5+3i”) Difference between the two complex numbers in the formula. 8+i