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MathGroup Archive 2007

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Re: Fw: 2

  • To: mathgroup at smc.vnet.net
  • Subject: [mg73692] Re: Fw: 2
  • From: "dimitris" <dimmechan at yahoo.com>
  • Date: Sat, 24 Feb 2007 02:29:34 -0500 (EST)
  • References: <ermcr9$hdl$1@smc.vnet.net>

I don't have version 4.2 so I can discuss it.

I used to have installed version 4.0 before upgrading to 5.2

I found handreds of things that (especially regarding definite
symbolic and numerical integration; solution of ODEs and PDEs) that
version 5.2 handles properly on the contrary with version 4.0

Of course, version 5.2  does for example slower symbolic definite
integrals
because of searching harder for convergence but I don't think this is
a disadvantage!

In very few cases does version 5.2 give poorer result than version 4.0

Regards
Dimitris



=CF/=C7 fizzy =DD=E3=F1=E1=F8=E5:
> This is an interesting question for me for another reason.....my 'favorit=
e'
> version of Mathematica is still 4.2....I have found many things that work=
 in
> 4.2 but do not work in 5.2....I have always been meaning to send them to
> mathgroup but, must admit, I'm too lazy for it.....however, this example
> here is perfect for the ocassion....
>
> It works in 4.2......interesting also, that the Output in 5.2 for  the
> Series[ ] question, the answer seems different....I havent investigated it
> further, just want to point out the interesting differences.....
>
> Jerry Blimbaum
>
> ----- Original Message -----
> From: "Andrzej Kozlowski" <akoz at mimuw.edu.pl>
> To: <mathgroup at smc.vnet.net>
> Sent: Thursday, February 22, 2007 3:35 AM
> Subject:
>
>
> > Try:
> >
> > Series[ArcCosh[x], {x, 0, 11}]
> >
> > and now try
> >
> > ArcCosh[x] + O[x]^12
> >
> > At least with my version of Mathematica:
> >
> > $Version
> > 5.2 for Mac OS X (February 24, 2006)
> >
> >
> > I do not get the same answer (in fact in the latter case the input is
> > returned unevaluated). With ArcSinh and any other function that I
> > have tried in place of ArcCosh  the outputs are always the same.
> >
> > Andrzej Kozlowski
> >
> >
> >
> >
> >
> >



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