I am working on and arbitrary constant type that would automatically combine with other constants (such as 2*C1 => C1). Whenever I get that in, we could see if it could be modified to do arbitrary functions. For now, I would just do F1, F2 = map(Function, 'F1 F2') as you said, just like arbitrary constants are now done as C1, C2 = symbols('C1 C2').
Aaron Meurer On Jul 9, 2009, at 1:57 PM, Priit Laes wrote: > > Ühel kenal päeval, K, 2009-07-08 kell 19:04, kirjutas David Joyner: >> On Wed, Jul 8, 2009 at 4:31 PM, Priit Laes<plaes...@gmail.com> wrote: >>> >>> Hey, >>> >>> For the past week I have been trying to figure out how to implement >>> solver for most basic types of PDEs and now it is finally time to >>> show >>> something: >>> >>> In [1]: from sympy import * >>> In [2]: from sympy.solvers.solvers import * >>> In [3]: from sympy import Derivative as D >>> In [4]: t,x,y,z = symbols('txyz') >>> In [5]: a = Symbol('a', Real=True) >>> In [6]: u = Function('u') >>> In [7]: eq = Eq(D(u(x, t), t) + a*D(u(x, t), x)) >>> In [8]: eq >>> Out[8]: >>> d d >>> a⋅──(u(x, t)) + ──(u(x, t)) = 0 >>> dx dt >>> In [9]: pdesolve(eq, u(x, t)) >>> Out[9]: [x - a⋅t] > > > What would be the best way of naming/defining arbitrary functions? > F1(), F2() and so on? > > And is it ok to just use F1, F2 = map(Function, 'F1 F2') ?? > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to sympy@googlegroups.com To unsubscribe from this group, send email to sympy+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sympy?hl=en -~----------~----~----~----~------~----~------~--~---