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Engineering function
IMSUM
Returns the sum of complex numbers.
Rarely usedDifficulty 1450 · AdvancedUsage rank #480 of 520
When to use it
Adds up to 255 complex numbers.
The shape of it
- Syntax
=IMSUM(inumber1, [inumber2], ...)
Worked examples
Two numbers
=IMSUM("3+4i","5-3i") → 8+i
Two numbers.
Mixed
=IMSUM("1","i") → 1+i
Real plus imaginary.
A range
=IMSUM(A2:A4) → 9+2i
A column of impedances in series.
Worth knowing
- Series impedances add.
- Suffixes must match across all arguments.
- Result is text.
Where it goes wrong
- #VALUE! for mismatched suffixes or invalid text.
- Blank cells in a range cause errors.
Related
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