Doug,
Agreed entirely that it's way too hard to get a handle on the
bazillions of permutations of Maxima functions. Sorry about that.
> (%i28) EV(a9,NUMER)
> (%o28)
> 0.03703703703704*(0.57735026918963*(-1)^0.16666666666667*(27.0*(-%I)^0.66666666666667-27)
> -31.1769145362398*(-%I)^0.33333333333333)
What is a9 here?
I don't have any answers for you, but knowning a9 would help us
track down the imagpart/realpart strangeness.
Sorry I can't be more helpful,
Robert Dodier