"Where do the equations y=x and y=-2x+3 intersect?"One way to find the solution is to solve the two equations algebraically using simultaneous equations.
First open and clear the main work pane.
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Press the blue Keyboard button and bring up the soft keyboard. Select the 2D tab.
You should be able to see a button with a bracket and two small boxes (circled below in red). Press it.
You should see the simultaneous equation template in the main pane.
(Update 1/6/2010: Press it twice to add a third equation line!)
Click on the box below it and type y=-2x+3
In the third box to the right of the vertical line type x,y (the variables we wish to solve).
Hit the exe button.
The answer (x=1, y=1) should appear.
Here is a link to other CAS calculator posts.
THis site is a life saver thankyou very much!~!!!
ReplyDeleteGlad to help!
ReplyDeletethank you so much!!
ReplyDeletei started to stress sooooo much, you have no idea!
my pleasure!
ReplyDeletei have a maths exam today, and this helped me so much for the Simultaneous Equations part, thanks heaps mate
ReplyDeleteYou're welcome!
ReplyDeletethis helped so much
ReplyDeletethankyou!!
Yay!
ReplyDeletethanks bra i needed this for a test ;)
ReplyDeleteDid I just get called bra? That's a new one!
ReplyDeleteaha thanks so much, this should be useful when i have my exam on tuesday :D
ReplyDeleteThanks brudda! You have just saved my life in my exam!
ReplyDelete:-)
ReplyDeleteDoes this help you to understand simulataneous equations? It seems you say that you can solve algebraically, but I can't see that you have done that. Would it not be better to learn how to solve simultaneous equations?
ReplyDeleteThe equation is solved. I don't see the point of using the classpad to mimic elimination and substitution method, two methods that are quicker on paper than via a classpad. This is probably the most read and commented on articles I have written because it addresses an issue of teachers (yes us!) not utilising CAS to reduce computational load.
ReplyDeleteFor a student to reach the point of knowing it is a simultaneous equation question can require a lot of work (see linear programming for instance), to be able to solve quickly (a year 8/9 task under national curriculum) is something worthwhile for those students that find solving trivial and tedious.
you saved me
ReplyDeletethank you very much
such a good bloke, cheers mate
ReplyDeleteThis applies to matrix equations too?
ReplyDeleteMatrices is a 3CD MAS topic, something that I haven't taught yet. If you are interested in looking into this further, I'd suggest the excellent http://www.classpad.com.au Their tutorials are excellent on a wide range of topics (and free!).
ReplyDeletethank youuuuuuuuuuuuuu so much :)))))
ReplyDeleteYou are welcome!
ReplyDeletenice
ReplyDelete