Re: Integrate question

*To*: mathgroup at smc.vnet.net*Subject*: [mg77612] Re: Integrate question*From*: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>*Date*: Thu, 14 Jun 2007 05:13:03 -0400 (EDT)*References*: <f4omvd$7qh$1@smc.vnet.net>

Hi dimitris, this is a very valuable question: > I am neither software enginner, nor pure mathematician but this > fundmental difference impressed me a lot! I am familiar > with the issue of generic complex values in mathematica > but here Mathematica "assumes" that typing Integrate[f'[x],{x,a,b}] > f[x] is continuous in [a,b]? and what happens with f'[x] if f[x] is *not* continuous in [a,b] ?? it does not exist on every point in[a,b]? You can't write f'[x] if it does not exist and writing it mean that f'[x] exist and that the integral will be continuous. Regards Jens