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MathGroup Archive 2000

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Fwd: Thx for your help

  • To: mathgroup at smc.vnet.net
  • Subject: [mg23727] Fwd: [mg23712] Thx for your help
  • From: Genny Russo <gen.rus at tin.it>
  • Date: Mon, 5 Jun 2000 01:09:19 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

I hope to help you.

1) In Mathematica, Abs[x] is left unevaluated if x is NOT a numeric 
quantity; so Integrate[Abs[x],x] returns the original input.

2) I began to study Mathematica with a very good book. Its last edition is 
entitled: "The Beginner's Guide to Mathematica Version 4", Jerry Glynn & 
Theodore Gray, by Cambridge University Press.
A new book is also good: "The Student's Introduction to Mathematica", Bruce 
F. Torrence & Eve A. Torrence, by Cambridge University Press.
However, you can visit the Mathematica Bookstore on the web at 
<www.wolfram.com/guide/bookstore>.

Genny Russo

>Date: Mon, 29 May 2000 22:05:44 -0400 (EDT)
>From: jml at accessinter.net ( José María Lasso)
To: mathgroup at smc.vnet.net
>To: mathgroup at smc.vnet.net
>Subject: [mg23727] [mg23712] Thx for your help
>
>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
>




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