Simultaneous Equation Solver FLASH App
Posted by Eric on 19 November 2001, 21:59 GMT
TI has released a new FLASH application: Simultaneous Equation Solver for the TI89 and TI92+ (click link to login, click again to view page). Basically, it's a little application for you lazy types who don't want to use solve() or rref() for some odd reason. It's free, so go check it out. Thanks to the hordes who emailed me with the news.



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Re: Simultaneous Equation Solver FLASH App

Reno

Well, I guess this is good. At least TI hasn't forgotten the 89.


19 November 2001, 22:03 GMT


Re: Simultaneous Equation Solver FLASH App

mlibs

1st!!!!


19 November 2001, 22:05 GMT


Re: Simultaneous Equation Solver FLASH App

mlibs

Gee, 2nd.
Well, this app is kind of useless since the 89 already does these functions. Maybe for those who don't want to type in all the required syntaxes or for number crunching.


19 November 2001, 22:06 GMT


Re: Simultaneous Equation Solver FLASH App

JamesP

If anyone could figure out how to do it on the 92+ that would be great, cause I dont want to waste memory for a program that the calculator will already do.


19 November 2001, 22:23 GMT





Re: Re: Simultaneous Equation Solver FLASH App

mlibs

Here's how.
Lets say we have the equations x+y=10 and 2xy=11.
1. Go to the algebra menu on the home screen and select "solve(". If the equations possibley have complex or imaginary solutions in it, then use "cSolve(."
2. Type in "x+y=10 and 2xy=11,{x,y})
3. On the command line, it should look like "solve(x+y=10 and 2xy=11,{x,y})
4. Press enter.
5. x=7 y=3
6. There's a faster a way of doing it so u don't have to type everything. The custom menu fills in the {} and the word "and."
7. For 3 or more equations, you have to put in three equations with "and" in between each and it should be {x,y,z}. Also, your calculator is not limited to x,y variables. Those are the variables in the example equation. So you can use a and b but you have to type in {a,b} not {x,y}.
You can also find zeros/roots/xintercepts using the zero( command. I reccomend you read the manual that came with your calculator. It really helps.


19 November 2001, 22:49 GMT


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