HDTenEightyP/NetNews huggingface dataset:
From: li@GAUSS.CASR.FAU.EDU (Charlie Li)
Newsgroups: sci.math.symbolic
Subject: Mathematica Output
Date: 13 Apr 92 01:57:03 GMT
Article-I.D.: gauss.9204130157.AA26077

Hi, I have trouble to find the command to save a bunch of outputs to a
file instead of screen display.  Just like Reduce's "OUT filename" command.
I know that we can add ">> filename" at the end of each input line can
save the output to a file, but it is kind of hard to do it repeatedly.
Also, if I use "<< filename" to run several commands, it only outputs the
result of the last command, I cannot see the intermidiate result.

I tried to use "math < input > output", but the output file doesn't
contain the input line, so we have to compare with the input file line by
line to read the output file.

I tried "splice" command too, I need to write each input line twice, one
without mark "<*" and one with the mark, to get the nice output file.

Is there any better way to do it?  Please let me know.  Thanks a lot.

Charlie Li
Center for Applied Stochastics Research, Florida Atlantic University
Newsgroups: sci.math.symbolic
From: gondwana@athena.mit.edu (Matthias G Imhof)
Subject: mathematica + color
Organization: Massachusetts Institute of Technology
Date: Wed, 8 Apr 1992 14:48:12 GMT

it is rather obvious, how graylevels are used for e.g. densityplots

but how are colors used to code z values?

if i use ColorFunction->Hue or ColorFunction->RGBColor, how
are the different z levels coded?

is there a way to produce a legend (a bunch of z-levels and their
corresponding color)?

can i control the way the z values are coded?

***************************************************************************
*                                *                                        *
* Matthias G.Imhof               * And as in uffish thought he stood      *
* MIT Earth Resource Lab E34/370 * The Jabberwock, with eyes of flame     *
* 42 Carlton St                  * Came whiffling through the tulgey wood *
* Cambridge MA 02142             * And burbled as it came!                *
* (617) 253 7835                 *                                        *
* gondwana@athena.mit.edu        * LEWIS CARROLL 1832-1898                *
*                                *                                        *
***************************************************************************
From: depken@rigel.econ.uga.edu (Craig Depken)
Newsgroups: sci.math.symbolic
Subject: Re: MathCAD question
Date: 15 Apr 92 04:11:53 GMT
Organization: University of Georgia Economics Department


I have a question in MathCad...I have been trying to get MathCad to plot
 to my HP7475 plotter. I select the HPGL (HP Plotter) printer driver from
 the select printer menu, but all I get in return is the blinking error
 light on the plotter.

Does anyone know the correct dip-switch settings to get MathCad to plot
 to the plotter. The people at MathCad were nice but offered no real help.

Thanks in advance,

		Craig Depken
		depken@rigel.econ.uga.edu
Newsgroups: sci.math.symbolic
From: katherle@daisy.uwaterloo.ca (Kate Atherley)
Subject: Maple V Release 2
Summary: new features
Originator: katherle@daisy.waterloo.edu
Organization: University of Waterloo
Date: Tue, 7 Apr 1992 16:23:05 GMT

As Marc Edgar had asked about it here are some details:

The next version of Maple, Maple V Release 2, will be available before
the end of the year.  The exact release date depends on the platform.  The
Unix version should be ready in the 3rd quarter of the year, and the DOS
and Windows versions in the 4th quarter.

Many changes, additions and improvements have been made for Release 2,
including totally revamped plotting facilities.  Facilites for contour
plots and log plots have been implemented.

A Windows version of Maple V will be released in the second quarter of
this year, which includes the new plotting routines.

If you have any specific questions, please feel free to get in touch
with us here at Waterloo Maple Software.

Kate
-----------------------------------------------------------------------
| Kate Atherley                      |  Tech. Phone: (519) 747-2505   |
| Waterloo Maple Software            |  Alt. Phone:  (519) 747-2373   |
| Technical Support Supervisor       |  FAX:  (519) 747-5284          |
|----------------------------------------------------------------------
| email: wmsi@daisy.waterloo.edu                                      | 
|        support@daisy.waterloo.edu    (support issues)               |
|        katherey@daisy.waterloo.edu   (personal address)             |
-----------------------------------------------------------------------
From: wmcb@lynx.math.appstate.edu (Bill Bauldry)
Newsgroups: sci.math.symbolic
Subject: Re: Maple V Release 2
Date: 9 Apr 92 19:40:52 GMT
Organization: Appalachian State U

In article <1992Apr8.182845.29667@zaphod.mps.ohio-state.edu>, edgar@function.mps.ohio-state.edu (Gerald Edgar) writes:
> 
> In article <1992Apr08.164141.51653@yuma.acns.colostate.edu> flatau@lamar.ColoState.EDU (Piotr Flatau) writes:
> 
> >Is there any publication describing MapleV "by example" .
> > mean something other than MapleV Library Reference Manual, and
> > MapleV Language Reference Manual.
> 

The standard references are:
i.		Maple V Library Reference Manual
ii.	Maple V Language Reference Manual
both from Springer-Verlag - I don't seem to have the ISBN's right now.

> You might look at _Maple for the Calculus Student" by Ellis & Lodi
> [Brooks/Cole, 1989].  Their examples come from Maple version 4.2,
> I believe.
> 

The Ellis&Lodi book shows up in the first three chapters of the "Flight Manual."
The next two chapters are for Linear Algebra and Diff Eq's. Nicely written.

The new "First Leaves" is a "by example" that will do nicely for many users
until the need the full reference manuals.

Bill
----
From: cl50@cunixa.cc.columbia.edu (Chengi  Lin)
Newsgroups: sci.math.symbolic
Subject: mma animation
Keywords: mma animation
Date: 15 Apr 92 23:23:44 GMT
Organization: Columbia University

Please someone out there help me with mathematica animation.  I am using NeXT Mathematica 2.0.  I followed careful the example on page 175 of Mathematica by S. Wolfram, but don't see the animation?  I think I am missing something but can not figure the missing part.  

Any help is greatly appreciated.


---cl


	[] Cheng-I Lin		[] SEAS, Columbia University
	[] Internet:	cl50@cunixa.cc.columbia.edu
From: pitakc@minnie.ee.pdx.edu
Newsgroups: sci.math.symbolic
Subject: Availability of Maple V for NeXT.
Date: 6 Apr 92 21:43:39 GMT
Reply-To: pitakc@minnie.ee.pdx.edu ()

I just received the following mail from Waterloo Software.

>From wmsical!dsraimdo@watmath.waterloo.edu Sun Apr  5 13:40:46 1992
Received:  from watmath.waterloo.edu by snowhite.ee.pdx.edu (4.1/pdx-client-evision:  
1.15 

        id AA24061; Sun, 5 Apr 92 13:40:42 PDT
Received: from wmsical.uucp by watmath.waterloo.edu with uucp
        id <AA17526>; Sun, 5 Apr 92 16:40:38 -0400
Received: by wmsical (AIX  2.1 2/4.03)
          id AA18809; Tue, 31 Mar 92 09:24:15 EST
Date: Tue, 31 Mar 92 09:24:15 EST
From: wmsical!dsraimdo@watmath.waterloo.edu (Dave Raimondo)
Message-Id: <9203311424.AA18809@wmsical>
To: pitakc@snowhite.ee.pdx.edu
Subject: Maple for the NeXT
Status: R


Maple V for the NeXT is now ready for shipping. The academic price for
a single cpu is $595 US plus shipping and handling.


David Raimondo
National Sales Manager
Waterloo Maple Software
160 Columbia Street West
Waterloo, Ontario, Canada
Phone: 519-747-2373
Fax:   519-747-5284
E-mail: dsraimondo@Maplesoft.on.ca



I think this might be interested by people who are wating for this software.

Later,

Pitak


Newsgroups: sci.math.symbolic
From: edgar@function.mps.ohio-state.edu (Gerald Edgar)
Subject: Re: Maple V Release 2
Organization: The Ohio State University, Dept. of Math.
Date: Wed, 8 Apr 1992 18:28:45 GMT

In article <1992Apr08.164141.51653@yuma.acns.colostate.edu> flatau@lamar.ColoState.EDU (Piotr Flatau) writes:

>Is there any publication describing MapleV "by example" .
> mean something other than MapleV Library Reference Manual, and
> MapleV Language Reference Manual.

You might look at _Maple for the Calculus Student" by Ellis & Lodi
[Brooks/Cole, 1989].  Their examples come from Maple version 4.2,
I believe.


--
  Gerald A. Edgar                Internet:  edgar@mps.ohio-state.edu
  Department of Mathematics      Bitnet:    EDGAR@OHSTPY
  The Ohio State University      telephone: 614-292-0395 (Office)
  Columbus, OH 43210             -292-4975 (Math. Dept.) -292-1479 (Dept. Fax)
Newsgroups: sci.math.symbolic,comp.sys.next.programmer
From: fletcher@socrates.umd.edu (Charles Fletcher)
Subject: MathLink -- simple code examples
Keywords: MathLink, Mathematica
Organization: University of Maryland University College
Date: Mon, 13 Apr 1992 13:47:21 GMT

I have been asked to post examples of the MathLink code I got to compile.
Here are the simple examples which come straight from the latest(?) WRI
MathLink documentation. Both should compile using:

	mcc -o yournamehere xxx.c

where xxx.c is the sample code.

Also see Chuck Fleming's example (in ObjC for the NeXT) evalpoly.tar.Z
posted on pellns.alleg.edu.

Good luck and may the farce be with you,

Charlie

********************Example 1 -- Sum.c************************************

/* Test program for MathLink -- Use Mathematica to sum two  numbers*/

#include <stdio.h>
#include "mathlink.h"

main()
{
	int i,j,sum;
	MLINK mylink;

	printf("Enter two integers:");
	scanf("%d %d", &i, &j);
		
	mylink = MLStart( "math -mathlink");
	
	MLPutFunction(mylink,"Plus",2);
	MLPutInteger(mylink,i);
	MLPutInteger(mylink,j);
	MLEndPacket(mylink);

   while (MLNextPacket(mylink) != RETURNPKT)
        MLNewPacket(mylink);

	MLGetInteger(mylink, &sum);

	printf("The  sum is: %d\n", sum);


        MLPutFunction(mylink, "Exit", 0);	
	MLClose(mylink);
	
}


************************Exampe 2 -- Factor.c****************************

/* Test program for MathLink -- Use Mathematica to factor  an integer*/

#include <stdio.h>
#include "mathlink.h"

void error();

main()
{
	int n, len, lenp, k, prime, expt;
	MLINK mylink;

	printf("Enter an Integer to be factored:");
	scanf("%d", &n);	
		
	mylink = MLStart( "math -mathlink -batchoutput -noinit");
	
	MLPutFunction(mylink,"FactorInteger",1);
	MLPutInteger(mylink,n);	
	MLEndPacket(mylink);

   if (MLNextPacket(mylink) != RETURNPKT) error(mylink);
   if ( ! MLCheckFunction(mylink, "List", &len) ) error(mylink);
   for ( k=1; k <= len; k++) {
   	if ( MLCheckFunction(mylink, "List", &lenp)
	&& lenp == 2
	&& MLGetInteger(mylink, &prime)
	&& MLGetInteger(mylink, &expt)
	){
		printf("%d^%d\n", prime, expt);
	} else {
		error(mylink);
		}
	}

        MLPutFunction(mylink, "Exit", 0);	
	MLClose(mylink);
	exit(0);
}

void error(alink) MLINK alink;
{
	if ( MLError(alink) ) {
		printf("Error detected by MathLink: %s.\n", 
			MLErrorMessage(alink));
	}else{
		printf("Error detected by the program\n");
		}

		MLClose(alink);
	
	exit(1);
}
		



-- 
*********************************************************************
*	NeXTMail to:		*	...to confer, converse, and *
*	charlie@technosci.com	*	otherwise hobnob with my    *
*				*	fellow wizards.		    *
Newsgroups: sci.math.symbolic
From: edgar@function.mps.ohio-state.edu (Gerald Edgar)
Subject: Re: Polynomials over Clifford algebras.
Organization: The Ohio State University, Dept. of Math.
Date: Thu, 16 Apr 1992 15:18:49 GMT


> 
>
>                              Maple
>                             ~~~~~~~
>
>Mathematica
> 
>(* rules for  Clifford algebra *)
>       
>  ncm[s[i_],s[j_]] := -ncm[s[j], s[i]]/;i > j
>  ncm[s[i_], s[i_]] := 1

I didn't know Maple had admitted its defeat by Mathematica...
--
  Gerald A. Edgar                Internet:  edgar@mps.ohio-state.edu
  Department of Mathematics      Bitnet:    EDGAR@OHSTPY
  The Ohio State University      telephone: 614-292-0395 (Office)
  Columbus, OH 43210             -292-4975 (Math. Dept.) -292-1479 (Dept. Fax)
Newsgroups: sci.math.symbolic
From: flinxwei@magnus.acs.ohio-state.edu (Eric Linxweiler)
Subject: Contacting Wolfram Research Inc.
Organization: The Ohio State University
Distribution: usa
Date: Mon, 13 Apr 1992 20:21:39 GMT

Here are the various routes to contact Wolfram Research, Inc.:

US Mail:       100 Trade Center Drive
               Champaign IL 61820-7237

Phone:         217/398-0700

Fax:           217/398-0747

Orders:        800/441-MATH

E-mail:        info@wri.com             (to request various information)
               suggestions@wri.com      (to provide suggestions)


Eric Linxweiler
Ohio State University
linxweiler.1@osu.edu
Newsgroups: sci.math.symbolic,cmu.sci.math.symbolic
From: vcr+@EDRC.CMU.EDU (V C Ramesh)
Subject: Arbitrary Matrix from a List
Date: Mon, 13 Apr 92 19:49:38 -0400
Organization: Carnegie Mellon University
Reply-To: vcr@cs.cmu.edu

Is there something similar to DiagonalMatrix[] that would take a list
and produce an mxn array ?  eg: ArbitMatrix[list, {m,n}] ?
If not, can someone show this novice how to define my own ?

To display a grid of color values, I intend doing:

t = ReadList["data.m", Number]

mtx = ArbitMatrix[t, {m,n}]         <= *NEEDED*

s = Show[DensityGraphics[mtx], ColorFunction -> Hue]
(thanks to those that responded to my previous post)
 
Display["ps.m", s]; !lpr ps.m

The last bit doesn't work either, since our b/w postscript laser printer
is offended by "MathPictureStart" command in ps.m .
Anyone know a cure for this postscript problem (I am postscript
illiterate, too) ?  I should mention that I sent this color PS file
to a b/w printer expecting a gray-level image - is that the problem?
(a test on a color printer is too painful since access is restricted).

Thanks,
Ramesh
vcr@cs.cmu.edu
Newsgroups: sci.math.symbolic
From: kogeddes@daisy.waterloo.edu (Keith O. Geddes)
Subject: Maple V books
Organization: University of Waterloo
Date: Thu, 9 Apr 1992 02:03:38 GMT

In article <1992Apr08.164141.51653@yuma.acns.colostate.edu> flatau@lamar.ColoState.EDU (Piotr Flatau) writes:
>
>Is there any publication describing MapleV "by example" .
> mean something other than MapleV Library Reference Manual, and
> MapleV Language Reference Manual.
>

In article <1992Apr8.172811.3919@clark.edu> watson@clark.edu (Dennis Watson) writes:

>I recently purchased the student edition of Maple V.  It comes with a "by
>example" manual called "Maple V Flight Manual."  What I need is access
>to the Maple Reference Manuals!
>

The "Maple V Flight Manual" is a publication of Brooks/Cole Publishing,
and it goes with the Student Edition of Maple.

The original query about a "by example" manual is probably best answered
by the new book which is now in the presses at Springer-Verlag:

    B.W. Char, K.O. Geddes, G.H. Gonnet, B.L. Leong, M.B. Monagan, & S.M. Watt,
	First Leaves: A Tutorial Introduction to Maple V.
	Springer-Verlag, New York, 1992.
	ISBN 0-387-97621-3

The Reference Manuals are also Springer-Verlag publications and they have
been available for many months:

    B.W. Char, K.O. Geddes, G.H. Gonnet, B.L. Leong, M.B. Monagan, & S.M. Watt,
	Maple V Language Reference Manual.
	Springer-Verlag, New York, 1991.
	ISBN 0-387-97622-1

    B.W. Char, K.O. Geddes, G.H. Gonnet, B.L. Leong, M.B. Monagan, & S.M. Watt,
	Maple V Library Reference Manual.
	Springer-Verlag, New York, 1991.
	ISBN 0-387-97592-6

To order in North America, call Springer-Verlag at 1-800-777-4643.
(Available in many bookstores.)
From: sherod@news.Colorado.EDU (Scott Herod)
Newsgroups: sci.math.symbolic
Subject: Re: Variable  ReadList input. How to ?
Date: 15 Apr 92 16:59:47 GMT
Article-I.D.: colorado.1992Apr15.165947.11882
Organization: University of Colorado, Boulder

In article <1992Apr15.010005.5096@oracle.pnl.gov>, d3a132@roark.oname (Carl P Baker) writes:
|> 
|> In article 68470@yuma.acns.colostate.edu, flatau@lamar.ColoState.EDU (Piotr Flatau) writes:
|> >
|> >..
|> >I have a list of numbers somewhat like that
|> >
|> >3 1 2 3
|> >3 67 45 23
|> >3 1 8 9
|> >4 2 3 4 9
|> >
|> >where the firstnumber indicates how many numbers will follow.
|> >How do I  code
|> >
|> >ReadList["myfile", {Number, Number .....}]
|> >such that it sometimes reads-in 3 numbers and sometimes 
|> >4 (these which follow the first one). The problem originates
|> >when describing polyhedra as a linked list of vertices and faces.
|> >
|> >Peter
|> 

Here is what I have to read in a big list of data and plot results.

dc[file_] :=
Block[{f,len,wdt,chi,beta},
f=OpenRead[file];
len=Read[f,Number];
wdt=Read[f,Number];
chi=Read[f,Number];
beta=Read[f,Number];
x=ReadList[f,Table[Number,{wdt}]];
Close[f];

Show[
        Table[
                Graphics3D[ Line[ {x[[y,{1,2,3}]], x[[y+1,{1,2,3}]]} ] ],
                {y,1,len-1}
        ], BoxRatios->{1,1,1}
    ]
]

Scott Herod
Applied Mathematics
University of Colorado

(sherod@newton.colorado.edu)
Newsgroups: sci.math.symbolic
From: frank@unixg.ubc.ca (Murray Frank)
Subject: Mathematica and os/2
Organization: University of British Columbia, Vancouver, B.C., Canada
Date: Thu, 9 Apr 1992 16:42:54 GMT

Mathematica for Windows does not run under os/2 2.0. I have not
managed to find out what Wolfram Research's plans are for os/2 
compatability. Accordingly can anyone tell me about using Maple under
os/2 2.0? Also what would it cost to upgrade to Maple (if it runs well
under os/2)? Thanks.
From: ricampb@afterlife.ncsc.mil (Robert Campbell)
Newsgroups: sci.math.symbolic,cmu.sci.math.symbolic
Subject: Re: Mathematica-2.0 question
Keywords: mathematica, listdensityplot, densitygraphics
Date: 16 Apr 92 02:43:51 GMT
Organization: The Great Beyond

In article <1992Apr13.183028.288211@cs.cmu.edu> vcr@cs.cmu.edu writes:
>I am trying to get ListDensityPlot/DensityGraphics to display a 2-D array of
>pixel values *in color*.  First, I tried: ...
>ps: I would also like a legend of z-values & colors, if one is available.
Try the usage:
ListDensityPlot[list,ColorFunction->((RGBColor[Abs[#],1-Abs[#],0])&)]
The bottom line is that you want to set the ColorFunction option to a
function which, when evaluated on each z-value, yields a color (ie a
RGBColor, CMYKColor, or Hue object).

For the second question, setting up a legend, I suggest that you look at
the standard package Graphics/Legend.m. Read it in with the command
Needs["Graphics`Legends`"] and then read the usage statements for
the new commands Legend, ShowLegend, and PlotLegend.

					- Rob Campbell -
Newsgroups: sci.math.symbolic
From: rodney@math.toronto.edu (Peter Rodney)
Subject: mathematica code for primitive element sought
Organization: Department of Mathematics, University of Toronto
Date: Wed, 8 Apr 92 18:47:45 GMT

I'm looking for some Mathematica ( or Maple ) code which will 
produce a primitive element for a finite field.  I could of 
course write it myself but I feel that any duplication of work
in this area is unnecessary as it will be a subroutine of a 
much larger problem. If there is such a thing available for 
anonymous ftp or if someone has some code they would be willing
to share it would be much appreciated. 
-peter
rodney@math.toronto.edu
From: nb@Sunburn.Stanford.EDU (Nancy Blachman)
Newsgroups: sci.math.symbolic
Subject: Computer Algebra at Junior Colleges
Date: 9 Apr 92 19:10:24 GMT
Article-I.D.: CSD-News.1992Apr9.191024.8523
Organization: Computer Science Department,  Stanford University.
Originator: nb@Sunburn.Stanford.EDU

Are you using a computer algebra system at a junior college or 
do you know others who are?  If so, please drop me a note telling 
me which computer algebra system you are using and whether you 
found it easy or difficult to learn the system and to incorporate 
its use into the curriculum.

I recently gave a presentation on using computer in math classes.
The audience consisted primarily of junior college math teacher.

Nancy Blachman
Newsgroups: sci.math.symbolic
From: alexei@avignon (Alexei Bocharov)
Subject: >> Waves and Diffusion
Summary: a specification needed for the PDE package
Keywords: partial differential equations
Organization: Wolfram Research, Inc.
Date: Mon, 13 Apr 1992 17:18:06 GMT

In the article by
> Mark Haase:     Wed, 8 Apr 1992 00:24

a very important question is posed

> Are there any Mathematica routines available that will solve hyperbolic
> or parabolic PDEs (eg., wave and heat equations)?  I plan to run a
> computer lab for a PDE class and would be very interested in any packages
> that are available.  We plan to use Mathematica on the NeXT platform.

The only thing that keeps us right now from creating a Mathematica PDE
package is absence of a commonly acknowledged specification of what
`solving PDEs' means.
There is no such thing as `general solution' for PDEs of the order > 1.
So what kind of solutions and/or other quantative values are of the
most interest here ?

Opinions and requests will be most highly appreciated.

Alexei--

e-mail:  alexei@wri.com
voice :  (217) 398-0700 ext. 168   

----------------------- Disclaimer --------------------------------------
This is a personal posting : opinions and suggestions therein are my own
and are not necessarily related to those of my employer.
From: marc@vieta.math.uni-sb.de (Marc Conrad)
Newsgroups: sci.math.symbolic
Subject: SIMATH3.5 on ftp !!!
Summary: version 3.5 now available via ftp.
Keywords: computer algebra system in number theory
Date: 14 Apr 92 10:38:15 GMT


The new SIMATH-version 3.5 is now available via anonymous ftp 
from 
anonymous@ftp.math.uni-sb.de

For those, who don't know, what SIMATH is, here a short 
description:
(the "official" README File, you will get, if you get SIMATH)

--- 
This file is part of the computer algebra system SIMATH. 
Copyright (C) 1992 by the SIMATH group in Saarbruecken.

The computer algebra system SIMATH is free software. This software is
distributed in the hope that it will be useful, but
		WITHOUT ANY WARRANTY.

Permission is hereby granted to copy the system for any non-commercial
purposes, provided the above notices are retained on all copies.

Upon reception of this software, please send an e-mail message to
		simath@math.uni-sb.de
to inform us that you got a copy of the system.

 -----------------------------------------------------------------------------

The computer algebra system SIMATH is written in C. It was developed
for research purposes by the SIMATH group of Prof. Dr. H.G. Zimmer at
the University of Saarland in Saarbruecken, Germany.

Up to now SIMATH is running on the following machines: 
	Sun 3/140 under SunOS 3.4,
	Sun 3/80 under SunOS 4.0.3,
	Sun SPARCstation under SunOS 4.1.1,
	Apollo DN 3000 under SR10.1,
	Apollo DN 4500 under SR10.1,
	Apollo DN 10000 under SR10.3,
	Siemens MX2 under SINIX V2.0, 
	Siemens MX2+ under SINIX V5.2 and
	Siemens MX300 under SINIX V5.2.

Even if you are using a different machine (and/or operating system),
you can (and you should) try to install SIMATH. If you are successful
please let us know. If you had to change some of the SIMATH source
files, please inform us of the changes to be made.

If you have any problems or suggestions, please contact us by mail:
	SIMATH-Gruppe
	Lehrstuhl Prof. Dr. H.G. Zimmer
	FB 9 Mathematik
	Universitaet des Saarlandes
	W-6600 Saarbrueken
or by e-mail:
	simath@math.uni-sb.de
or by phone:
	0681/302-2206.

The latest version of SIMATH may be obtained by anonymous ftp from
math.uni-sb.de (134.96.32.23).
--------

or send a respond to this article to me. 





Marc. 

--
     \   /                     | Marc Conrad 
      \ Luxemburg              | Universitaet des Saarlandes
France \|   Germany            | marc@math.uni-sb.de 
        \x <---- you are here! | phone: 0681 302-2297
From: zou@.math.arizona.edu (Maorong Zou)
Newsgroups: sci.math.symbolic
Subject: Mma bug?
Date: 11 Apr 92 07:23:56 GMT
Distribution: usa
Organization: Dept. of Mathematics, University of Arizona  85721




A possible bug in Resultant[].  

In[1]= f1[x] = 2 h (1-x^2) - (b- g x)^2 - A g^2 (1-x^2) - C x^2(1-x^2)

In[2]= f2[x] = D[f1[x],x]

In[3]= r := Resultant[f1[x],f2[x],x];

In[4]= r/.C->0

Out[4]= 0
        ^
        |      
         which is obviously wrong.

This is Mma 2.0 runing on a NeXT machine.
Newsgroups: sci.math.symbolic