Schemely graphing calculators?
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Dorai Sitar #1 / 37

Schemely graphing calculators?
I'm trying to brush up on some higher math through private reading and am looking to get a graphing calculator to help me along. The only calculators I've used so far are "scientific" (ie, +*/, trig, log, hyp, and stats on singlevar lists). I like the promise of visualizing complicated functions on the x,yplane (or x,y,zspace), and the ability to do numeric integration and matrix manipulation, but I'm not really looking for a "student" calculator, with menu'd lessons and such. Also, I'd like a machine whose programming language is as Schemelike in feel, if not in syntax. Is this too tall an order? If not, what brand/model would you recommend? Thanks. d ps: Does it have to be a calculator? Yes. My discretionary reading time is rather scattered these days and may not be near a real computer running MzScheme, CLISP, Gnuplot and suchlike.

Sun, 14 Mar 2004 04:49:59 GMT 


Wade Humeniu #2 / 37

Schemely graphing calculators?
Try Option 1: http://www.lispme.de/lispme/ A Scheme system for the palm OS. As for a graphing calculator, I do not know. In general, garphing calculators are extremely limited and can only approximate an actual graph. Sometimes its best to stick with the actually equation and leave the visualization out of it. Option 2: Mathematica for the Palm?? http://www.wolfram.com/products/mathematica/ Runs on Linux, was there not a PDA linux system somewhere? Option 3: Get a laptop and install whatever you need. Macsyma, Mathematica, .... you get the idea. Option 4: (The best) Higher mathematics reading usually does not need the use of a calculator. Answers are always exact and learning to do everything by hand exercises the brain. I do not think Einstein or Gauss or Fermat or Newton or Laplace or Poincare or Euler or Galois or Hilbert needed a calculator. You probably do not either. Wade
Quote: > I'm trying to brush up on some higher math through > private reading and am looking to get a graphing > calculator to help me along. The only calculators I've > used so far are "scientific" (ie, +*/, trig, log, hyp, > and stats on singlevar lists). I like the promise of > visualizing complicated functions on the x,yplane (or > x,y,zspace), and the ability to do numeric integration > and matrix manipulation, but I'm not really looking for > a "student" calculator, with menu'd lessons and such. > Also, I'd like a machine whose programming language is > as Schemelike in feel, if not in syntax. Is this too > tall an order? If not, what brand/model would > you recommend? Thanks. > d > ps: Does it have to be a calculator? Yes. My > discretionary reading time is rather scattered these > days and may not be near a real computer running > MzScheme, CLISP, Gnuplot and suchlike.

Sun, 14 Mar 2004 05:09:25 GMT 


David Feue #3 / 37

Schemely graphing calculators?
It sounds like you've never used a graphing calculator... One good one is the TI86, which provides just about anything you could want. (the TI89 and TI92 have more, but are more complicated to use). The TI86 is not schemish at all (programming language much like BASIC). However... you could probably write a scheme interpreter in some dialect of C, compile it to TI86 machine code, and then transfer it to the calculator.... There are compilers for this, but I have no info. It is even possible that someone has already written a scheme interpreter for the TI86, but I wouldn't know about such things. Quote:
> I'm trying to brush up on some higher math through > private reading and am looking to get a graphing > calculator to help me along. The only calculators I've > used so far are "scientific" (ie, +*/, trig, log, hyp, > and stats on singlevar lists). I like the promise of > visualizing complicated functions on the x,yplane (or > x,y,zspace), and the ability to do numeric integration > and matrix manipulation, but I'm not really looking for > a "student" calculator, with menu'd lessons and such. > Also, I'd like a machine whose programming language is > as Schemelike in feel, if not in syntax. Is this too > tall an order? If not, what brand/model would > you recommend? Thanks. > d > ps: Does it have to be a calculator? Yes. My > discretionary reading time is rather scattered these > days and may not be near a real computer running > MzScheme, CLISP, Gnuplot and suchlike.
 /TimesBold 40 selectfont/n{moveto}def/m{gsave true charpath clip 72 400 n 300 4 1{dup 160 300 3 1 roll 0 360 arc 300 div 1 1 sethsbcolor fill}for grestore 0 60 rmoveto}def 72 500 n(This message has been)m (brought to you by the)m(letter alpha and the number pi.)m(David Feuer)

Sun, 14 Mar 2004 05:03:48 GMT 


Thomas F. Burdi #4 / 37

Schemely graphing calculators?
Quote:
> Option 4: (The best) > Higher mathematics reading usually does not need the use of a calculator. > Answers are always exact and learning to do everything by hand exercises the > brain. I do not think Einstein or Gauss or Fermat or Newton or Laplace or > Poincare or Euler or Galois or Hilbert needed a calculator. You probably do > not either.
No offense intended (and honestly, someone would have to be pretty full of themselves for this to be offensive :), but I'm pretty sure Dorai isn't quite an Einstein or Gauss. If someone thinks that modern technology can help them learn something better, well, I say they should use it. We live in the 21st century, we get get no choice about the bad stuff, so we should take full advantage of the good stuff. You might want to check out HP calculators, they use a stackbased postfix syntax.

Sun, 14 Mar 2004 06:27:28 GMT 


James A. Cripp #5 / 37

Schemely graphing calculators?
Quote:
> Get a laptop and install whatever you need. Macsyma, Mathematica, .... > you get the idea.
No Macsyma. It got reabsorbed into Symbolics who then stopped talking about distributing it. It *was* ported to Windows, Linux, Mac, and misc Unices, as well as Genera. Anyone heard the status of Macsyma lately? 'james 
Lambda Unlimited: Recursion 'R' Us  /  USA, 61.2069 N, 149.766 W, Y = \f.(\x.f(xx)) (\x.f(xx))  \  Earth, Sol System, Y(F) = F(Y(F)) \_,_/ Milky Way.

Sun, 14 Mar 2004 07:11:17 GMT 


David Feue #6 / 37

Schemely graphing calculators?
<snip> Quote: > Option 2: > Mathematica for the Palm?? > http://www.wolfram.com/products/mathematica/ > Runs on Linux, was there not a PDA linux system somewhere?
<snip> Yes. It's called the Agenda (www.agendacomputing.com). A friend of mine has one and likes it. I seriously doubt it has anywhere near the processing capability necessary to run Mathematica (it has to be slow to save battery power). However, there is a scheme interpreter available for it. The scheme interpreter does not support graphics, but it is open source, so it probably would not be _too_ hard to add minimal graphics support. Of course, you'd have to write your own calculator, but since you seem to like programming scheme, that shouldn't be a problem ;).  /TimesBold 40 selectfont/n{moveto}def/m{gsave true charpath clip 72 400 n 300 4 1{dup 160 300 3 1 roll 0 360 arc 300 div 1 1 sethsbcolor fill}for grestore 0 60 rmoveto}def 72 500 n(This message has been)m (brought to you by the)m(letter alpha and the number pi.)m(David Feuer)

Sun, 14 Mar 2004 07:10:33 GMT 


Wade Humeniu #7 / 37

Schemely graphing calculators?
Quote: > graphics support. Of course, you'd have to write your own calculator, > but since you seem to like programming scheme, that shouldn't be a > problem ;).
Cough, sputter, ....... SEEM to like programming in Scheme! Aaaagh! Of all the things to be tagged with in this forum. Not for a long time, CL forever! :) LOL Wade

Sun, 14 Mar 2004 07:22:47 GMT 


James A. Cripp #8 / 37

Schemely graphing calculators?
Quote:
> > graphics support. Of course, you'd have to write your own calculator, > > but since you seem to like programming scheme, that shouldn't be a > > problem ;). > Cough, sputter, ....... > SEEM to like programming in Scheme! Aaaagh! Of all the things to be tagged > with in this forum.
Silly, this is crossposted to both c.l.scheme and c.l.lisp. Not that those potsmoking communist hippie Scheme freaks care. ;) Quote: > Not for a long time, CL forever! :) LOL
(allpraisecommonlisp?) => #t 'james 
Lambda Unlimited: Recursion 'R' Us  /  USA, 61.2069 N, 149.766 W, Y = \f.(\x.f(xx)) (\x.f(xx))  \  Earth, Sol System, Y(F) = F(Y(F)) \_,_/ Milky Way.

Sun, 14 Mar 2004 07:35:47 GMT 


Tim Moor #9 / 37

Schemely graphing calculators?
Quote:
>> Get a laptop and install whatever you need. Macsyma, Mathematica, >> .... you get the idea. > No Macsyma. It got reabsorbed into Symbolics who then stopped talking > about distributing it. It *was* ported to Windows, Linux, Mac, and misc > Unices, as well as Genera. > Anyone heard the status of Macsyma lately? 'james
http://www.ma.utexas.edu/maxima.html Maxima is DOE Macsyma from the early 80s ported to Common Lisp. Unfortunately the maintainer of Maxima and GCL, Bill Schelter, died recently. Tim

Sun, 14 Mar 2004 07:48:29 GMT 


Wade Humeniu #10 / 37

Schemely graphing calculators?
Quote: > > Not for a long time, CL forever! :) LOL > (allpraisecommonlisp?) => #t
Cross posted! Hey no schemisms ^ ! Wade

Sun, 14 Mar 2004 09:35:11 GMT 


Steve VanDevende #11 / 37

Schemely graphing calculators?
Quote:
> I'm trying to brush up on some higher math through > private reading and am looking to get a graphing > calculator to help me along. The only calculators I've > used so far are "scientific" (ie, +*/, trig, log, hyp, > and stats on singlevar lists). I like the promise of > visualizing complicated functions on the x,yplane (or > x,y,zspace), and the ability to do numeric integration > and matrix manipulation, but I'm not really looking for > a "student" calculator, with menu'd lessons and such. > Also, I'd like a machine whose programming language is > as Schemelike in feel, if not in syntax. Is this too > tall an order? If not, what brand/model would > you recommend? Thanks.
The HP 48GX and HP 49G calculators should be able to do everything you want and more. The 49G in particular has a fairly sophisticated computer algebra system; a 48GX with some additional freelyavailable software comes pretty close. The programming language they use is sort of an unholy combination of FORTH, Pascal, and LISP (they call it RPL for "Reverse Polish LISP") but is very practical and flexible.  Steve VanDevender "I ride the big iron" http://jcomm.uoregon.edu/~stevev
Little things break, circuitry burns / Time flies while my little world turns Every day comes, every day goes / 100 years and nobody shows  Happy Rhodes

Sun, 14 Mar 2004 12:04:08 GMT 


Stephan H.M.J. Houb #12 / 37

Schemely graphing calculators?
Quote: >I'm trying to brush up on some higher math through >private reading and am looking to get a graphing >calculator to help me along.
What about Audrey Jaffer's JACAL running on a laptop or palmtop? http://swissnet.ai.mit.edu/~jaffer/JACAL.html Apparently, SLIB supports Pocket Scheme, so I suspect that JACAL will run on Pocket Scheme on a Windows CE PDA. But I don't have such a PDA myself; perhaps others are willing to comment on this? Hope this helps, Stephan

Sun, 14 Mar 2004 15:12:26 GMT 


see.signatu #13 / 37

Schemely graphing calculators?
For advanced mathematics on a small computer or handheld, have a look at derive (http://www.derive.com). It is a computer algebra system which needs only a tiny amount of resources and even runs on dos. It is written in mulisp. The HP calculater range uses RPL, which could be remotely considered lisp  alike. Marc   email: marc dot hoffmann at users dot whh dot wau dot nl 

Sun, 14 Mar 2004 18:17:20 GMT 


Tim Bradsha #14 / 37

Schemely graphing calculators?
Quote:
> I'm trying to brush up on some higher math through > private reading and am looking to get a graphing > calculator to help me along. The only calculators I've > used so far are "scientific" (ie, +*/, trig, log, hyp, > and stats on singlevar lists). I like the promise of > visualizing complicated functions on the x,yplane (or > x,y,zspace), and the ability to do numeric integration > and matrix manipulation, but I'm not really looking for > a "student" calculator, with menu'd lessons and such. > Also, I'd like a machine whose programming language is > as Schemelike in feel, if not in syntax. Is this too > tall an order? If not, what brand/model would > you recommend? Thanks.
HP48 has to be the obvious choice, if you want a calculator as such (rather than something on a palm or so). It's not Lisp/Scheme as such, it's more like ForthwithGC. Things like Lists are a pain for a Lisp person because they're not really linkedlists (you can't share tails). Against that it's completely programmable, and people have done serious stuff for it, like nontrivial algebra systems. You need to get some of these packages rather than use the builtin stuff, which is fine, but pales in comparison. There is an *amazing* amount of software written for these things. They are slow, and memory is a lot (and you need some extra). You want the GX model. There's some newer one (hp49G) which may be better but I lost track of things before it really came out. HP's site is www.hp.com/calculators, the best user site I know is www.hpcalc.org tim

Sun, 14 Mar 2004 17:11:04 GMT 


Aaron J Reicho #15 / 37

Schemely graphing calculators?
Quote: > [snip]
At first I wasn't going to mention it, but people have been talking about buying an Agenda PDA and writing up your own graphics support for some PDAscheme... What I use as a calculator (and for graphing) is my Apple Newton MessagePad 2000. I'd go on and on about what I love about it, but I'll save you that. I use a package called LittleLisp <http://www.adelaide.net.au/~dbenn/LittleLisp/LittleLispDocs>. It has some built in plotting and turtle graphics prims, so no need to add that. I wrote my own plot function (10 lines long) as a quick hack. I'll be touching it up when there's an actual need to. Quite rough compared to even the graphing and zooming capabilities of a TI82, but good enough for me. And besides, there's something fun about passing on a function as a closure. :) David Benn will be releasing LittleLisp under the GPL as soon as he package and document the source some. I'm planning on making it a little more Schemelike in it's naming conventions, and adding a fuller set of standard functions. Regards, Aaron Aaron Reichow :: UMD ACM Pres :: http://www.d.umn.edu/~reic0024/ "life, probably the biggest word i've ever said, that says a lot, becos there's a whole lot of words inside my head..." :: atmosphere

Mon, 15 Mar 2004 02:52:41 GMT 


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