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Sekwaf wrote on 2011-10-19 04:11
So, I'm sure most people have used a graphing calculator by now, and I'm sure a good portion of you know that you can create your own programs for them. This is VERY useful if you ask me. Although, I've hit a roadblock in my programming on mine. I really would like to know if they can solve a system of linear equations and give the points that would be the intersection on a graph. I can't for the life of me figure it out. Also, this thread can be about any calculator programming questions in general, I'm sure myself or somebody MUCH more learned on the subject can help you out.
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Cucurbita wrote on 2011-10-19 04:14
Its because I wrote programs like these on my calculators that I forgot how to calculate the points of intersections on a linear equation. I really don't suggest you do it.
Though I guess if you're still pushing for it, I'm not the guy to ask. I haven't done math in years.
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Sekwaf wrote on 2011-10-19 04:28
Well I personally remember how to do it, especially since I program everything by myself. I'm mostly wondering about the limits, and if what I'm thinking about is even possible. I feel certain I could do it in python (which I finally decided to start) but there wouldn't be much purpose in it. Besides, calculating the distance between a line and point takes way to long for my liking.
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EndlessDreams wrote on 2011-10-19 04:41
Don't usually the calculator manual teaches you that kind of stuff? It would kind of depend on the model of your graphic calculator though.
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Lolicon wrote on 2011-10-19 06:22
^
Look at the manual, its there for a reason.
On a side note:
My friend got Super Mario Worlds 1 and 8 on his calculator.
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chaolin wrote on 2011-10-19 08:28
Just graph them and find the intersection if you can't solve it by hand. I feel like you should be able to solve any linear system anyways (hence the purpose of the class).
Edit: If you must know read this...
http://www.occc.edu/maustin/matrix_solutions/matrix%20solution%20of%20linear%20systems.htm
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Taycat wrote on 2011-10-19 13:48
I really don't suggest doing that. You could find get a teacher who insists you show your work. What then? You won't be able to show the work because you never really worked the work out in the first place. And then, you're screwed because said teacher will deduct points for not showing the work and your grades won't be as good as they should be.
So basically, don't do it.
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Zid wrote on 2011-10-19 14:25
Depends on what calculator you have, but you generally just need to graph the two equations, then find the calculator function that finds the intersected point by itself.
Or, you know, you could always just do y1 = y2 on paper.
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Sekwaf wrote on 2011-10-21 01:41
You people miss my point entirely. I know perfectly well exactly how to solve them, it's ridiculously easy in fact. I can show work if it's necessary, but if not I always prefer to have a two second alternative. It's also a back-up incase I ever forget how to do something, I can look at a program and determine how something was done originally. I'm merely asking if it's possible to do this in a program, not just using the calculator, an actual program on it. This is merely a small convenience of mine. On a side note about the showing your work, after/if I get a program, I could quite easily make it display the work for me as well... just saying.