Complex numbers functions are in the Analysis Toolpak add-in. ToolsAdd-in,
check Analysyis Toolpak and the VBA version.
Look in Help for details, or do a Google Groups search:
http://groups.google.com/advanced_group_search
with the exact phrase "complex numbers" in the groups "*excel*"


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Kind Regards,

Niek Otten

Microsoft MVP - Excel

"Alain Turgeon" wrote in message
...
I would like to know if there is some possiblities to use
complex variable to do calculation in a subroutine or if
you have to use real number and do the calculation by
yourself.

Thanks very much!