IMSUB() function
About IMSUB() function
The IMSUB() function is an Engineering function that returns the subtracted number of 2 complex numbers in text form. This keeps 2 arguments and they are inumber1, inumber2.
Where to apply :
This function is used by engineers to solve the subtraction of 2 complex numbers.
Syntax :
=IMSUB(inumber1, inumber2)
Parameters :
inumber1- A complex number.
inumber2- A complex number.
Example:
1. For the 2 complex numbers.
=IMSUB("9+3i", "7+8i") // Returns (2-5i)
It returns "2-5i" for the complex numbers "9+3i" and "7+8i" .
Excel based example:

The IMSUB() function is well explained in above image.
Hope, it would have added in your Excel function knowledge.
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