lowergamma(s,0) does not simplify to zero? Why?
lowergamma is defined as integrate(t**(s-1)*exp(-t),(t,0,x))) and this is also exactly what the docstring lowergamma? tells me. Now, if I do In[1]: simplify(integrate(t**(s-1)*exp(-t),(t,0,x))) (it will take *ages* until....) I finally get Out[1]: -lowergamma(s, 0) + lowergamma(s, x) In principle this is ok., because from lowergamma(s,x)'s definition I know that lowergamma(s,0) = 0 However if I try to prove the latter explicitly In [2]: simplify(lowergamma(y,0)) I only get Out[2]: lowergamma(y, 0) Why not 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. For more options, visit https://groups.google.com/groups/opt_out.
