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Re: Integrate question

  • To: mathgroup at smc.vnet.net
  • Subject: [mg82334] Re: Integrate question
  • From: "Oskar Itzinger" <oskar at opec.org>
  • Date: Thu, 18 Oct 2007 04:44:22 -0400 (EDT)
  • References: <200710160728.DAA08846@smc.vnet.net> <ff4hpp$k0e$1@smc.vnet.net>

Ok, Mathematica 2.1 was "mindless" here, but why was it considered to be
"wrong"?

/oskar

"Andrzej Kozlowski" <akoz at mimuw.edu.pl> wrote in message
news:ff4hpp$k0e$1 at smc.vnet.net...
>
> The reason is that Mathematica 2.1 was wrong and Mathematica 5.2 is
> much more careful and right. What Mathematica 2.1 did here was simply:
>
> Subtract @@ (Integrate[x/(3 x^2 - 1)^3, x] /. {{x -> 1}, {x -> 0}})
>   1/16
>
> in other words, it applied the Newton-Leibnitz rule in a mindless
> way.




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