Mathematica 9 is now available
Services & Resources / Wolfram Forums
MathGroup Archive
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2000

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Thx for your help

  • To: mathgroup at
  • Subject: [mg23743] Re: Thx for your help
  • From: Jens-Peer Kuska <kuska at>
  • Date: Mon, 5 Jun 2000 01:09:36 -0400 (EDT)
  • Organization: Universitaet Leipzig
  • References: <8gv8ji$>
  • Sender: owner-wri-mathgroup at

Hi, since Mathematica don't know that

x^n*DiracDelta[x]== 0 /; n>0

it can't find that Integrate[Abs[x],x]-> x^2*Sign[x]/2

As book advice *not* a Mathematica book, a mathematics book
seems to be more use full.


Jos\151 Mar\155a Lasso wrote:
> Hi,
> Thx for the answers to my last post, but I have a new question, similar to
> the last one, when I try: Integrate[Abs[x],x], there is no result, just the
> original input, what I am doing wrong?, I need some advice about a good
> book about Mathematica for beginers.Thx again.Best regards
> Jose M Lasso

  • Prev by Date: NDSolve error message: Can't find starting value ...
  • Next by Date: Fwd: 4.0.1 (Mac) front end crashing
  • Previous by thread: Re: NDSolve error message: Can't find starting value ...
  • Next by thread: Re: Thx for your help