Path: utzoo!mnetor!tmsoft!torsqnt!lethe!yunexus!ists!helios.physics.utoronto.ca!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!hp-pcd!hpcvra.cv.hp.com!rnews!hpcvbbs!akcs.brentlz
From: akcs.brentlz@hpcvbbs.UUCP (Brent Ellzey)
Newsgroups: comp.sys.handhelds
Subject: Re: Questions on 48: diff eq's and algebra
Message-ID: <27a3d4cc:1826.1comp.sys.handhelds;1@hpcvbbs.UUCP>
Date: 28 Jan 91 07:40:08 GMT
References: <1991Jan27.172808.20069@cs.dal.ca>
Lines: 25

As to your first question...I don' believe that the 48 can solve
diff-eq's directly entered as alebraic objects. As I understand it,
the 48 uses patern matching of built in (and user defined) functions 
to symbolically integrate/differentiate...A numerical method would 
more than likely be necessary to solve diff-eq's...

2) Yes, there are ways to manipulate algebraics...I don't know 
   about being "easier"...see chapter 22: Algebra in volume 1
   of the Owner's manual.

3) "An Easy course in Using the HP-48SX" is available from 
   Grapevine Publications for $22.00
   P.O. Box 2449, Corvallis, OR 97339-9960  1-800-338-4331
   the info I have says to add $10.00 for postage to Canada...

   This may also be available from Educalc, 27953 Cabot Road,
   Laguna Niguel, CA 92677 USA...They also charge $10.00 fo
   r shipping to Canada...

   Although I haven't seen this book, I can feel relatively safe
   in suggesting it as Grapevine is known for high quality 
   publications( Really, I don't work for them :-)

Hope this was helpful...Brent Ellzey
                        Aerospace Engineering( undergrad )
                        University of Arizona...go Wildcats!