Stan Schymanski ha scritto:
> Hi Jason,
>
> I gave an example for what does not work here:
> http://groups.google.com/group/sage-support/browse_thread/thread/17c717e8bfbdd367/b2fdb60e1f33b43e#b2fdb60e1f33b43e
>
> Today I noticed that my old use of .subs(locals()) now leads to an
> error, too.
>
> I could try to copy the notebook to somewhere else, but I don't think
> this would avoid the "Unable to start maxima" error I am getting. It
> seems that the upgrade to 4.1. changed something that 3.4 was using, so
> 3.4 does not work any more. If I install 3.4 again, I suspect that this
> could break 4.1, so I would get myself into an awful mess, wouldn't I?
>
> Thanks for your help!
>
> Stan
>
I don't know how to make work your old code on a new Sage, but here is
the way of working with Sage 4 :
var('x y')
soln = solve(y == x^3 -2, x)
print soln
print soln[1].right_hand_side()
Sage's answer :
[
x == 1/2*(I*sqrt(3) - 1)*(y + 2)^(1/3),
x == 1/2*(-I*sqrt(3) - 1)*(y + 2)^(1/3),
x == (y + 2)^(1/3)
]
1/2*(-I*sqrt(3) - 1)*(y + 2)^(1/3)
Have a good afternoon
Laurent
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