CAS: approx. sqrt?

[Helge Gabert]

Thanks for the explanation,

but what about the 3-root and 4-root expressions? They stay in exact form. Why not have sqrt(complex #) simply also rewritten as e^(1/2*ln(complex number)? Or just leave it as sqrt(Complex #)? Will that really lead to too complicated, exact expressions further on?

If so, flashing the warning makes sense (as a suggestion), but the user can always hit the approx key anyway (at any time). I don't think that the CAS system should approximate by default - - the beauty of CAS is to enable exact computations.