On 2011-11-08 19:35, William Stein wrote: > In this case, dirac_delta is actually a distribution. It > is defined as the distribution with the property that > > integral(dirac_delta, a, b) > > is 0 if the interval [a,b] does not contain 0, and is 1 if the > interval [a,b] does contain 0. Not quite, even according to Sage:
sage: integrate(dirac_delta(x), x, 0, 0) 0 For a and b different from 0, you are of course right but you cannot really defining this integral from 0 to 0. So, I think numerical_integral(dirac_delta(x), x, 0, 0) isn't really defined. -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
