> > sage: fs.integrate() > RootSum(229*_t**4 + 6*_t**2 + _t + 1, Lambda(_t, _t*log(-37785*_t**3/3547 > - 5496*_t**2/3547 + 12979*_t/3547 + x + 691/3547))) > }}} > > Interesting.
> > The problem is that sage hasn't the appropiate symbolic object to handle > RootSum (which is the sum of a expression over the roots of a polynomial). > > Should we introduce these kind of symbolic objects? This is the standard > way to compute integrals of rational functions (IIRC, that is what the > Risch algorithm does, for example). Wolfram Alpha returns a different > expression, but still a sum over the roots of a polynomial. > That is a good question. On the other hand, since both Sympy and Maxima seem to have them, it seems logical to wrap them. See http://trac.sagemath.org/ticket/16816 - kcrisman -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
