Re: Re: 1) Global Real Space and 2) Histogram Y-axis

*To*: mathgroup at smc.vnet.net*Subject*: [mg51699] Re: Re: 1) Global Real Space and 2) Histogram Y-axis*From*: "Steve Luttrell" <steve_usenet at _removemefirst_luttrell.org.uk>*Date*: Fri, 29 Oct 2004 03:39:57 -0400 (EDT)*References*: <clpqo8$9vo$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Thanks for the warning. I didn't know about the pitfalls (i.e. bugs) for the unwary. As it happens, I would not use RealOnly myself because complex number are my friends! Steve Luttrell "Florian Jaccard" <florian.jaccard at eiaj.ch> wrote in message news:clpqo8$9vo$1 at smc.vnet.net... > Hello Steve, > > I suggest not to use RealOnly. > With the package loaded, there are horrible mistakes with 5.0. > (Let us call it "bugs") > > For example : > > In[3]:= > << "Miscellaneous`RealOnly`" > > In[10]:= > Integrate[1/(x^2 + x + 1), x] > > Out[10]= > x/(1 + x + x^2) > > Which is wrong, of course ! > > So it is better to use > ComplexExpand and > Simplify[expr,Element[x,Reals]] > and so on! > > Regards > > F.Jaccard > > > -----Message d'origine----- > De : Steve Luttrell [mailto:steve_usenet at _removemefirst_luttrell.org.uk] > Envoyé : mercredi, 27. octobre 2004 07:54 > À : mathgroup at smc.vnet.net > Objet : Re: 1) Global Real Space and 2) Histogram Y-axis > > Use the Miscellaneous`RealOnly` package. > > Steve Luttrell > > "Skirmantas Janusonis" <skirmantas.janusonis at yale.edu> wrote in message > news:clcng4$q2p$1 at smc.vnet.net... >> I'd like to thank Janos D. Pinter and DrBob for their advice on >> NMinimize, >> which I found very helpful. >> >> Mathematica is so carefully designed that its accuracy sometimes may be >> annoying. Namely, it never forgets about complex numbers and sometimes I >> wish it did. My question is this: is it possible to tell a notebook that >> it >> has to deal only with real numbers? It would be nice to have some global >> setting so that one doesn't have to specify the same assumptions over and >> over again. >> >> My second question is this: How do I adjust the range of the y-axis of a >> histogram? PlotRange->{min,max} doesn't seem to work. >> >> Thanks! >> >> Skirmantas >> >> > > > >