see inline! On Mon, Jun 25, 2012 at 3:11 PM, Vinzent Steinberg <vinzent.steinb...@googlemail.com> wrote: > Am Sonntag, 24. Juni 2012 07:10:05 UTC+2 schrieb Aaron Meurer: >> >> Yes, unfortunately SymPy currently does not do so well with integrals >> of absolute values. > > > Actually you can work around this limitation by using piecewise functions: > > In [12]: myabs = lambda x: Piecewise((x, x>=0), (-x, x<0)) > > In [13]: integrate( (t1*t2*t3)**beta * myabs((t1-t2)*(t1-t3)*(t2-t3)), > (t1,0,1),(t2,0,1),(t3,0,1)).doit() > Out[13]: 0
But that answer 0 is wrong! Kjetil > > Maybe we should implement something like abs(x).rewrite(Piecewise). > > Vinzent > > -- > You received this message because you are subscribed to the Google Groups > "sympy" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/sympy/-/FZ1u8fmryOMJ. > > 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. -- "If you want a picture of the future - imagine a boot stamping on the human face - forever." George Orwell (1984) -- 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.
