On Sunday, December 1, 2013 7:30:00 AM UTC+1, Aaron Meurer wrote: > > Actually, if we could get the integrals themselves to work, that would > be even better. It would also be nice to get the correct convergence > conditions (as I recall, you need f(x) to grow sufficiently slow for > the integral to converge). >
Thanks Aaron. Sadly I cannot help with this, but I wanted to make sure it's on the horizon anyway. Should I file an issue to keep track of the feature request? Regards Juan Luis > > Aaron Meurer > > On Sat, Nov 30, 2013 at 11:24 PM, Aaron Meurer > <[email protected]<javascript:>> > wrote: > > Yes, we need to implement a table lookup for these kinds of rules. The > > same applies to other integral transforms as well. > > > > Aaron Meurer > > > > On Sat, Nov 30, 2013 at 4:24 AM, Juan Luis Cano > > <[email protected]<javascript:>> > wrote: > >> Hello all, > >> > >> I was playing with Laplace Transforms on SymPy and I was wondering if > >> there's a way to make them work with undefined functions: > >> > >> In [2]: x = Function('x') > >> > >> In [3]: from sympy.abc import s > >> > >> In [4]: laplace_transform(x(t).diff(), t, s) > >> Out[4]: LaplaceTransform(Derivative(x(t), t), t, s) > >> > >> I expected s * x(s). The inverse doesn't work either: > >> > >> In [5]: inverse_laplace_transform(s * x(s), s, t) > >> Out[5]: InverseLaplaceTransform(s*x(s), s, t, _None) > >> > >> Looking at the source code I guess it's impossible to deduce these kind > of > >> properties by just attempting to do the Integral. Is there any other > way? > >> > >> Thanks in advance > >> > >> Juan Luis Cano > >> > >> -- > >> 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] <javascript:>. > >> To post to this group, send email to [email protected]<javascript:>. > > >> 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.
