On 8/16/2013 5:56 AM, Esben Byskov wrote:
> *Maybe somebody can help.
>
> I have tried to solve the following rather simple equation using maxima:
>
> (%i1) Eq: -2*q^3+3*q-1.357008100494576;
> (%o1) - 2 q + 3 q - 1.357008100494576
>
> (%i2) solve(Eq,q);*
*first mistake. Solve finds exact solutions. It is unlikely that
1.35....576 is known exactly, but solve
assumes it is precisely a certain rational number, and goes from there.
try
allroots(Eq);
or
realroots(Eq); --- for rational approximations of guaranteed error
bounds.
*