| TI-84+ OS 2.30 Distinguishes Asymptopes | Andy | (Broken images removed, the alt text was: y=tan(x) y=1/cos(x) y=(1/((x-1)(x-2))) ) Apparantly TI isn't very good about making changelogs, because they never told us anything about the new goodies in TI-OS 2.30 for the 84+. According to these threads on the Detached Solutions forum, while OS 2.30 graphs functions considerably slower than OS 2.22, or other 8x calculators for that matter, it DOES check the graphs to see if there are any discontinuities, and shows them properly. This means, for example, that y1=1/(x-1) will NOT connect both parts of the graph! Even y2=1000rand-500 doesn't connect the dots, apparantly. If you want more yummy details, I suggest you read both threads. Many thanks to the newbies with legitimate questions (that were worded nicely...) wondering what was up. Their separate questions, when put together, made it click for Benjamin Moody (aka FloppusMaximus). No word yet on whether there's any way to turn this off to get faster graphing, but apparantly it only works for function graphing with lines. You can try animated line+ball graphing or parametric graphing to get rid of the checks and have it go faster.
Update 15 October 2005 23:00-ish by Andy: Added screenshot. Also, apparantly AMS 3.10 for the 89 Titanium and Voyage 200 also support this, and have an option to turn it off. Note that I'm just relaying what I think was said in a comment on this news article. Maybe I should go update my 89Ti to 3.10...
Update 18 October 2005 18:30-ish by Andy: Ok, so changing the graph style doesn't help -- you have to use parametric mode. You could also try using Xres=2, but that gives you generally fugly graphs anyway. Also added better screenshots. | | 13 Oct 2005, 04:29 GMT |
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 | | Re: TI-84+ OS 2.30 Distinguishes Asymtopes | Andy | | /me stabs TI for not telling us! | | 13 Oct 2005, 04:36 GMT |
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| | | Re: TI-84+ OS 2.30 Distinguishes Asymtopes | Andy | | Err, asymptotes, not asymtopes... I'd change it but then ti-news's cong feed would pick it up as a new item... I typed this up about 10 minutes after I woke up, give me a break. :) | | 13 Oct 2005, 15:06 GMT |
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| | | Re: TI-84+ OS 2.30 Distinguishes Asymtopes | JcCorp | | Cool... | | 13 Oct 2005, 07:25 GMT |
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| | | Re: TI-84+ OS 2.30 Distinguishes Asymtopes | Lunchbox | | Coolio! | | 13 Oct 2005, 21:57 GMT |
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| | | Re: TI-84+ OS 2.30 Distinguishes Asymtopes | greenorange | | Well, I would hope so, if TI implemented it in the 68ks in OS 3.10, I would think they wouldnt just forget about the z80s :)
Though on the 68k theres an option to disable it, not on the 2.10 OS huh? | | 14 Oct 2005, 17:02 GMT |
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| | | Re: TI-84+ OS 2.30 Distinguishes Asymtopes | greenorange | | Er, 2.30 | | 14 Oct 2005, 17:03 GMT |
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| | | Re: TI-84+ OS 2.30 Distinguishes Asymtopes | Andy | | *cough* Don't you have an edit link? Or is that just for admins?
Wait, 3.10 does it? O_O They really do suck at telling us stuff. Maybe I should actually upgrade my 89Ti...
As for option to turn it off... I don't have an 84+, so this entire article is hearsay -- but, prominant figures did the saying, I did the hearing, and they didn't say anything about a way to turn it off. | | 15 Oct 2005, 07:57 GMT |
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| | | Re: TI-84+ OS 2.30 Distinguishes Asymtopes | greenorange | | Edit doesnt exist for me :)
3.10 does indeed do this, as well as a bunch of other things (like inequality solving, which is awesome) (Everything else is either easily programmable or available in an App)
And it can be turned off on the F1 - Format menu. This is good because resolution cannot be set when its turned on. As for speed, if you leave resolution on default values, discontinuity detection on and off are about the same.
There _should_ be an option on the 84+ to turn it off, because that means resolution cannot be set O_O !! | | 15 Oct 2005, 14:55 GMT |
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| | | Re: TI-84+ OS 2.30 Distinguishes Asymtopes | greenorange | | HA! They cant even make a webpage properly!
http://education.ti.com/us/product/apps/89tios.html
Check the OS version, then look at the page heading! | | 15 Oct 2005, 17:40 GMT |
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| | | Re: TI-84+ OS 2.30 Distinguishes Asymtopes | Andy | | Yeah, they didn't change the tag when they copied the old page...
<br><br>
Anyway, some more screenies are available at <a href="http://www.detachedsolutions.com/forum/viewtopic.php?p=29732#29732" target="_blank">http://www.detachedsolutions.com/forum/viewtopic.php?p=29732#29732</a>.</td></tr><tr><td align="left"></td><td width="100%" align="right"><font class="sfont">15 Oct 2005, 21:46 GMT</font></td></tr></table></td></tr></table><Br><table width="100%"><tr><td><img src="../data/gfx/menu/disk_space.gif" width="0" height="1"> </td><td width="100%"><table width="100%" class="main" cellspacing="0" cellpadding="2" bgcolor="FFFFFF" style="border:1px solid #003399;"><tr bgcolor="006699" style="color: #FFFFFF;background-image:url('http://calcg.org/tbar.png');"><td width="90%" align="left"><b>Re: TI-84+ OS 2.30 Distinguishes Asymtopes</b></td><td width="10%" align="right"><b><a href="u.cgi?u=192"><font color="FFFFFF">BullFrog</font></a></b></td></tr><tr><td valign="top" class="topb" height="100%" colspan="2">Is it just me, or is that picture a graph of y=1/x?<br><br>---<br><i>"Men are not prisoners of fate, but only prisoners of their own minds." -Franklin D. Roosevelt</i></td></tr><tr><td align="left"></td><td width="100%" align="right"><font class="sfont">17 Oct 2005, 09:01 GMT</font></td></tr></table></td></tr></table><Br><table width="100%"><tr><td><img src="../data/gfx/menu/disk_space.gif" width="50" height="1"> </td><td width="100%"><table width="100%" class="main" cellspacing="0" cellpadding="2" bgcolor="FFFFFF" style="border:1px solid #003399;"><tr bgcolor="006699" style="color: #FFFFFF;background-image:url('http://calcg.org/tbar.png');"><td width="90%" align="left"><b>Re: TI-84+ OS 2.30 Distinguishes Asymtopes</b></td><td width="10%" align="right"><b><a href="u.cgi?u=192"><font color="FFFFFF">BullFrog</font></a></b></td></tr><tr><td valign="top" class="topb" height="100%" colspan="2">I mean, shouldn't a picture that better shows the feature be used instead? The y axis would kind of block the line anyway, I think...<br><br>---<br><i>"Men are not prisoners of fate, but only prisoners of their own minds." -Franklin D. Roosevelt</i></td></tr><tr><td align="left"></td><td width="100%" align="right"><font class="sfont">17 Oct 2005, 09:04 GMT</font></td></tr></table></td></tr></table><Br><table width="100%"><tr><td><img src="../data/gfx/menu/disk_space.gif" width="100" height="1"> </td><td width="100%"><table width="100%" class="main" cellspacing="0" cellpadding="2" bgcolor="FFFFFF" style="border:1px solid #003399;"><tr bgcolor="006699" style="color: #FFFFFF;background-image:url('http://calcg.org/tbar.png');"><td width="90%" align="left"><b>Re: TI-84+ OS 2.30 Distinguishes Asymtopes</b></td><td width="10%" align="right"><b><a href="u.cgi?u=16604"><font color="FFFFFF">Andy</font></a></b></td></tr><tr><td valign="top" class="topb" height="100%" colspan="2">It is, that was the only screenshot available when I added it. I've changed it to some different ones.
Also, you'd still be able to tell if it didn't do that -- that graph LOOKS like it runs to infinity; if it didn't check it wouldn't look near as clean.</td></tr><tr><td align="left"></td><td width="100%" align="right"><font class="sfont">18 Oct 2005, 08:30 GMT</font></td></tr></table></td></tr></table><Br><table width="100%"><tr><td><img src="../data/gfx/menu/disk_space.gif" width="0" height="1"> </td><td width="100%"><table width="100%" class="main" cellspacing="0" cellpadding="2" bgcolor="FFFFFF" style="border:1px solid #003399;"><tr bgcolor="006699" style="color: #FFFFFF;background-image:url('http://calcg.org/tbar.png');"><td width="90%" align="left"><b>Re: TI-84+ OS 2.30 Distinguishes Asymtopes</b></td><td width="10%" align="right"><b><a href="u.cgi?u=16969"><font color="FFFFFF">calcprogrammer1</font></a></b></td></tr><tr><td valign="top" class="topb" height="100%" colspan="2">This is cool. We just did step functions (like Y=int(X))in Algebra 2 and I wondered why my calc drew lines in between the steps. This new OS update fixes this problem well, and I don't notice the change in speed of drawing (can you see it on a TI 84 + SE?), the other thing I noticed that is different is that on the Table, and error shows as ERROR rather than ERR:.</td></tr><tr><td align="left"></td><td width="100%" align="right"><font class="sfont">17 Oct 2005, 16:32 GMT</font></td></tr></table></td></tr></table><Br><table width="100%"><tr><td><img src="../data/gfx/menu/disk_space.gif" width="50" height="1"> </td><td width="100%"><table width="100%" class="main" cellspacing="0" cellpadding="2" bgcolor="FFFFFF" style="border:1px solid #003399;"><tr bgcolor="006699" style="color: #FFFFFF;background-image:url('http://calcg.org/tbar.png');"><td width="90%" align="left"><b>Re: TI-84+ OS 2.30 Distinguishes Asymtopes</b></td><td width="10%" align="right"><b><a href="u.cgi?u=16604"><font color="FFFFFF">Andy</font></a></b></td></tr><tr><td valign="top" class="topb" height="100%" colspan="2">It's not so much a "fix" as it is a "new feature". The calculator was performing to specifications by connecting the lines; in fact we spent the better part of a class in Algebra II in highschool discussing why it does that.</td></tr><tr><td align="left"></td><td width="100%" align="right"><font class="sfont">18 Oct 2005, 14:54 GMT</font></td></tr></table></td></tr></table><Br><table width="100%"><tr><td><img src="../data/gfx/menu/disk_space.gif" width="0" height="1"> </td><td width="100%"><table width="100%" class="main" cellspacing="0" cellpadding="2" bgcolor="FFFFFF" style="border:1px solid #003399;"><tr bgcolor="006699" style="color: #FFFFFF;background-image:url('http://calcg.org/tbar.png');"><td width="90%" align="left"><b>Re: TI-84+ OS 2.30 Distinguishes Asymtopes</b></td><td width="10%" align="right"><b><a href="u.cgi?u=15"><font color="FFFFFF">allynfolksjr</font></a></b></td></tr><tr><td valign="top" class="topb" height="100%" colspan="2">As for AMS 3.10, after I read what TI added to it, I had no choice but to upgrade. :)</td></tr><tr><td align="left"></td><td width="100%" align="right"><font class="sfont">18 Oct 2005, 17:05 GMT</font></td></tr></table></td></tr></table><Br><table width="100%"><tr><td><img src="../data/gfx/menu/disk_space.gif" width="50" height="1"> </td><td width="100%"><table width="100%" class="main" cellspacing="0" cellpadding="2" bgcolor="FFFFFF" style="border:1px solid #003399;"><tr bgcolor="006699" style="color: #FFFFFF;background-image:url('http://calcg.org/tbar.png');"><td width="90%" align="left"><b>Re: TI-84+ OS 2.30 Distinguishes Asymtopes</b></td><td width="10%" align="right"><b><a href="u.cgi?u=16604"><font color="FFFFFF">Andy</font></a></b></td></tr><tr><td valign="top" class="topb" height="100%" colspan="2">My laziness is getting the better of me :-\</td></tr><tr><td align="left"></td><td width="100%" align="right"><font class="sfont">19 Oct 2005, 04:45 GMT</font></td></tr></table></td></tr></table><center><br><script type="text/javascript"><!--
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