# IMSUM

Spread for WinForms provides advanced software components that support Excel import/export, full cell customization, an extensive calculation engine with over 450 functions and more, all with zero dependencies on Excel.

## Content



This function returns the sum of two or more complex numbers in the x+yi or x+yj text format.

## Syntax

IMSUM(*complexnum1*,*complexnum2*, ...)

## Arguments

The arguments are the complex numbers to multiply. There can be up to 29 of them.
Arrays in the "x+yi" or "x+yj" format or range references are allowed.

## Remarks

An error is returned if the arguments are not in the form "x+yi" or "x+yj". For more information, refer to [Complex Numbers in Engineering Functions](/spreadnet/docs/latest/online-formula/formulas-overview/formulas-functs/formulas-functtypes/formulas-functsengineer/formulas-complexnumbers).

## Data Types

Accepts number and string data. Returns string data.

## Examples

`IMSUM("2+5j","5+3i")`
`IMSUM(A1:B5)`
`IMSUM({"2+5j","5+3i"})`

## Version Available

This function is available in product version 2.0 or later.

## See Also

[COMPLEX](/spreadnet/docs/latest/online-formula/formulas-functionsall/formulas-functsAtoC/FunctionCOMPLEX) \| [IMSUB](/spreadnet/docs/latest/online-formula/formulas-functionsall/formulas-functsFtoK/FunctionIMSUB) \| [Engineering Functions](/spreadnet/docs/latest/online-formula/formulas-overview/formulas-functs/formulas-functtypes/formulas-functsengineer) \| [Complex Numbers in Engineering Functions](/spreadnet/docs/latest/online-formula/formulas-overview/formulas-functs/formulas-functtypes/formulas-functsengineer/formulas-complexnumbers)