This behaviour seems strange. The case k=0 is handled correctly when integrating cos(k*x), but not cos(k*pi*x).
In [1]: integrate(cos(k*x),(x,0,pi)) Out[1]: ⎧π for k = 0 ⎨ ⎩0 otherwise In [2]: integrate(cos(k*pi*x),(x,0,1)) Out[2]: 0 -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/776993e9-96f6-4ec0-a3cf-816951bb7658%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
