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From: John H Meyers on 31 Aug 2006 18:22 [re TI "functions" vs. "programs"] I don't know exactly what these words mean in TI land, but using my own definitions, in "Algebraic" mode, the HP49/50 series seems to have made *everything* a "function," transparently to the user, by: o Hiding the original stack during evaluation. o Supplying just the explicit arguments to the "function" o Returning exactly one result in every case (NOVAL replacing "no result" and a list replacing multiple individual results) How clever of those HP people! [r->] [OFF]
From: Michael Kuyumcu on 1 Sep 2006 09:25 No 3D mode, no settings screen for this. Only rectangular, polar, and all the usual 2D stuff. Thanks for thinking about this. Michael Kuyumcu Yao Konan schrieb: > On the TI92 to plot 3D graph you need to put the calculator in 3D mode. > Is there a some kind of settings screen ? > > Michael Kuyumcu a écrit : > > > Is there a quick way to test 3D functions plotting capabilities. I > > mean, now that we know that programming constructs work in functions, > > maybe you could come up with 4 or 5 lines of test codes for 3D > > plotting? Of course, I don't know whether that kind of programming > > would be so easy, but if it is, maybe you would like to try it? > > > > Anyway, thanks for considering it! > > > > Regards, > > Michael Kuyumcu > > > > > > > > > > Yao Konan schrieb: > > > > > Thanks for the information. > > > It is surprising that 3D plotting is not easily availlable as it is one > > > of my favorite feature of those advanced calc and in fact one of the > > > main marketing argument for the TI92 when it was introduced in 1995. > > > For programming of the Tool assuming that it has a similar user > > > language to the TI92,you can find some help from the TI89TI/Voyage 200 > > > guidebook availlable from the TI site here: > > > http://education.ti.com/educationportal/appsdelivery/download/download_eula.jsp?cid=us&displayMode=G&applicationid=6128&contentpaneid=17 > > > > > > Eventually i could give you additionnal help if needed as i happen to > > > be quite strong with TI92 Basic. > > > I think that you could write programs with the Note editor then > > > tokenize and save them from the calculator screen. > > > For exemple the famous Hello world: > > > Define hello()=Prgm: > > > Text "Hello Wolrd":EndPrgm > > > Execute from the calculator apps,this should create the program which > > > when called as > > > hello() should show a window with the message. > > > > > > Michael Kuyumcu a écrit : > > > > > > > Hi Jean-Yves, > > > > > > > > no touch sreen, just a small circular plastic pad which is sensitive to > > > > finger presses and with which you can push the pointer arrow on the > > > > screen into any direction (diagonally works, too). There are additional > > > > arrow keys which basically do the same thing but much more slowly > > > > (pixel-wise). The pointer speed is ok now, but will be too slow when I > > > > have gotten used to it, I think. There is no way to change the speed, > > > > although there are a couple of other general "system settings". The > > > > device is completely menu-driven, just like any ordinary PC, you can > > > > have any number of documents open at one time, among them a > > > > spreadsheet, which is much like Excel. It features local and global > > > > cell references, and the whole apparatus for symbolic math (the CAS > > > > core) can be used in any cell. There is an automated sequence generator > > > > for the spreadsheet, too, which is nice when doing pseudo-random test > > > > series. The basic principle is that you have a "problem" (that's how TI > > > > calls the Nspire documents, I hope the docs won't cause any) to which > > > > you can assign up to four different applications (CAS, graphics, > > > > spreadsheet, and notes). Changes in variables, definitions and so forth > > > > in any of the environments immediately and dynamically affect all > > > > assigned applications. > > > > > > > > In fact, I like the device a lot so far. It features a big clear > > > > screen, which is just a tad too dark for me and could have been coated > > > > in a way to better prevent light reflections. It seems to be > > > > programmable (there are flow control constructs, Goto Label command, > > > > and the like). I just have not written any program yet, and don't know > > > > how to (where to write it and how to run it and so on), since there is > > > > no written documentation with the calculator, and the last TI I have > > > > programmed was the TI 66. In fact, I learned programming on that > > > > calc... nostalgia... Can anyone point me to programming ressources for > > > > the Voyage or the TI-92? Maybe the systems will turn out to be similar. > > > > I have not noted any options for assembler programming (which is one of > > > > my favorite pastimes). > > > > > > > > I have found numerous graphics plotting capabilities, but none dealing > > > > with 3D so far. But then, I had the Nspire running for only 30 minutes > > > > roughly yet. > > > > > > > > Regards, > > > > Michael Kuyumcu > > > > > > > > > > > > > > Hi Michael. > > > > > > > > > > Thank you for your post. > > > > > > > > > > It looks like TI made the best use of the waiting time and created a > > > > > learning device similar to what Xpander should have been. > > > > > Is the calculator using a touch screen or like what it appears on photo > > > > > just a little joystick? if yes, how does it work? do you like it? > > > > > > > > > > Does it have a spreadsheet? how does it work? > > > > > > > > > > > > > > > Too bad HP was left behind technologically. I agree with your earlier > > > > > comments. > > > > > > > > > > Jean-Yves
From: Michael Kuyumcu on 1 Sep 2006 09:29 That's 15 seconds Michael Kuyumcu Yao Konan schrieb: > > The on-calc system info says otherwise: it treats the whole memory as > > one block. The system software takes up about 8 or so MB, and the rest > > is free for you, the user. At least the system info does not > > differentiate any ram or rom areas visibly. > > Well,i think that those 32 MB are Flash ROM as the TI site claims that > the TI-NSpire has close to 20 MB of storage memory thus Flash ROM. > The TI site also claims 16 MB of computing memory so iassume that this > memory is not SRAM and can't be used to store datas. > > > Interesting: fib(10000) produces an overflow, even in Exact mode, while > > the CAS seems to be capable of handling multiple-precision numbers > > otherwise with no problems.fib(1000) works, and does so within 2 > > seconds. > > Surprising. > That would mean that the TI-NSpire is more than 10 times faster than my > TI92+ on this problem.This is simply incredible ! > To have a better idea of the relative speed of this tool could you > clock this operation which takes almost 4 min on a TI92+ ? > approx(randmat(20,20)^-1) > It doesn't really suprise me that fib(10000) returns an overflow. > > > Regards, > > Michael Kuyumcu > > > > > >
From: Yao Konan on 1 Sep 2006 09:38 Wow,no 3D plotting and no programs support. It is seriously begin to worry me. I hope that the rumoured additions of Derive features to the TI-NSpire is true. Anyway,thanks. Michael Kuyumcu a écrit : > No 3D mode, no settings screen for this. Only rectangular, polar, and > all the usual 2D stuff. > Thanks for thinking about this. > > Michael Kuyumcu >
From: Yao Konan on 1 Sep 2006 09:41
Wow,no 3D plotting and no programs support. It is seriously begin to worry me. I hope that the rumoured additions of Derive features to the TI-NSpire is true. Anyway,thanks. Michael Kuyumcu a écrit : > No 3D mode, no settings screen for this. Only rectangular, polar, and > all the usual 2D stuff. > Thanks for thinking about this. > > Michael Kuyumcu > |