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Engineering - IMSUB Function
Description
The IMSUB function returns the difference of two complex numbers in x + yi or x + yj text format. When subtracting complex numbers, the real and imaginary coefficients are subtracted separately i.e., the equation to subtract complex number c+di from complex number a + bi is −
(a + bi) - (c + di) = (a - c) + (b - d)i
Syntax
IMSUB (inumber1, inumber2)
Arguments
| Argument | Description | Required/ Optional |
|---|---|---|
| Inumber1 | The complex number from which to subtract inumber2. | Required |
| Inumber2 | The complex number to subtract from inumber1. | Required |
Notes
Complex Numbers in Excel are simply stored as text.
When a text string in the format "a + bi" or "a + bj" is supplied to one of Excel's built-in Complex Number Functions, this is interpreted as a complex number.
The complex number functions can accept a simple numeric value, as this is equivalent to a complex number whose imaginary coefficient is equal to 0.
Use COMPLEX to convert real and imaginary coefficients into a complex number.
If one or both of the inumber arguments is not recognized as a Complex Number, IMSUB returns the #NUM! error.
If one or both of the inumber arguments is a logical value, IMSUB returns the #VALUE! error.
Applicability
Excel 2007, Excel 2010, Excel 2013, Excel 2016
Example
