We can already solve that one using LambertW (but we need to implement all the branches, https://code.google.com/p/sympy/issues/detail?id=4006).
Can these work with trig functions (via equivalence from complex exponentials)? A more classic example of a root that can't be expressed in closed-form is cos(x) = x. Aaron Meurer On Sun, Feb 2, 2014 at 5:46 AM, someone <[email protected]> wrote: > Hi, > >> Great. Those should be useful for getting solve to return *all* >> solutions in those cases, even if just in a symbolic form. > > Right. I Imagine something like: > > TransRootOf(exp(x)-x**2, x, 0) > TransRootOf(exp(x)-x**2, x, 1) > TransRootOf(exp(x)-x**2, x, 2) > > for the three roots of this equation. > >> Do the algorithms work at all if there are symbolic coefficients? > > No, not as far as I know. This is difficult if possible > at all. There are some results for parametric polynomials. > > -- > You received this message because you are subscribed to the Google Groups > "sympy" 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/sympy. > For more options, visit https://groups.google.com/groups/opt_out. -- You received this message because you are subscribed to the Google Groups "sympy" 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/sympy. For more options, visit https://groups.google.com/groups/opt_out.
