I downloaded the App and have been playing with it since the day after it came out, and I must say I was a bit disapointed (I know I am probably the first to say this) by the parenthesis thing and the clipboard. How come they can be used no where except the home screen? I would use neither for any practical purpose other than BASIC programming.

I e-mailed him early on asking if he'd put the clipboard ability in the program editor, too, but he said he probably wouldn't. I don't mind the parentheses because it's very useful in math (yes, I do sometimes use my calculator for things other than games... *shudder*)

I'm going to consider it for the next version, it'll take some time to implement because the program editor is different from the homescreen.

what about more programming functions?

*gasp*
You mean the calculator can do stuff other than play Tetris!!?? And to think that I never knew!!!

yep! It can play mario!

PARADE FOR MARIO!!!
PARADE FOR TETRIS!!!


and does anyone know of an equation solving program that can do 2 or more variables at once?

As in '3X+3=5Y'?
go to the problem solver (Math + 0) then type: 0=5Y-3X-3.
It works, but you might not get the intended answer. (The one above gives Y=.6 and X=0, which works, but it might not be the answer you were looking for...)

Better yet, get an 86 and hit [2nd] [TABLE]. Then you can solve systems of equations with up to 30 variables!!!
Parade for the 86!!

Heres a method that works well on all calcs (i know the 82 and up have it)
lets say:
x+8y+4z = 43
6x+6y+2z = 51
9x+y-z = 43
you put this into a matrix like this
[1 8 4 43
6 6 2 51
9 1 -1 43]
Then you goto the matrix menu, and i think under math there is a command rref (reduced-row echelon form)
then use rref [A] (or other matrix}
if there is one distinct point you will get
[1 0 0 A
0 1 0 B
0 0 1 C]
in this form A = x, B= y, C = z, and you have a solution

I always thought it was something like this: [B][A]^-1 or something like that.

yeah, thats another way to do it, they give you the same results, but the first way only involves making one matrix.

i was just reading the manual(82) last night and it said that you use somethin like *row+( a coulpe times, i dont think there is a rref

Im pretty sure the 82 has rref, it should be under one of the matrix menus. I know for a fact that the 83(+), 86, 89, and 92 have it. I wonder if teachers dont teach it, because it really makes life easier. I learned about it for the first time in linear algebra.

We had a discussion about this on TI-Math (Feb 2002). Somebody claimed that the 82 _doesn't_ have rref.
Their is an other way though. Say you want to solve this system:
4x+3y=19
6x+9y=51

You type: [[4,3][6,9]]^-1[[19][51]]
The answer will be [[1][5]], which means x=1 and y=5.

try TI's 'polynomial root finder and simultaneous equation solver' (quite the name). It is a 2 page app and works VERY well, but it disables all DS key hooks :/

Or [2nd] [TABLE] (for simultaneous) and [2nd] [PRGM] (for polynomials) on the 86. No need for an app and no disabling of DS key hooks.

What happend to my parade?
For tetris and mario

Believe me, that came up quite a bit during the beta testing phase.

HEY ARCHIVE GUYS!!!
http://www.ticalc.org/archives/ files/authors/29/2924.html

What happened here? My submitted program list is GONE!!! All 52 of them!!!

Are you referring to your author profile? Yours is now at .../61/6169.html and not .../29/2924.html, if that's what you're looking for. If it's not, then I have no idea. No tengo idea.

Whoa. They never changed it on me before... wonder why they did now???

Ahh.... I think I know why. I messed up in the categorization of like 10 of my new programs. I forgot to change the category each time I uploaded. Maybe they got angry that they had to do it themselves...

Naughty naughty ... don't you know that the archive staff is already horribly overworked? And then you force them to change the categorization of a third of them manually ... you should be ashamed. :P

Vive OS 3.43!!

Vive ... ME!!! aahahaha... ha.