I hope sombody can shed some light on this for me. Whe I graph

Y1(X)=(X^2)^(1/3), I get the correct graph of both positive and negative values of X.

But, when I graph Y1(X)=3rd"Radical Symbol"(X^2), I only get the positive side of the equation.

I also only get half when I graph Y1(X)=X^(2/3)

I've tried changing my CAS settings, and I've not had any luck. Are there special rules for using the "Radical" symbol of the equation writer?

Thanks

David Batiz