I have a result:

u1 = RootOf(4*_Z^2 + (4*RootOf(60*_Z^3 - 60*_Z^2 + 15*_Z - 1) - 4)*_Z + 4*RootOf(60*_Z^3 - 60*_Z^2 + 15*_Z - 1)^2 - 4*RootOf(60*_Z^3 - 60*_Z^2 + 15*_Z - 1) + 1)

I tried: convert(u1,'radical');

but it reported error Error, (in sprintf) too many levels of recursion

how can I convert it to this form?

Thanks!!

Hi, here is my question.

test:=v^3;

plot3d(test,u=0..1-v, v=0..1);

How can I  transform this plot in the right triangle into an equilateral triangle? 

So that the three edges of the plot are the same length.

I wanna, squish it, or shear?

any tools i can use? Or can I do it using some tricks to change the function?