Thread: How would I enter the following in my TI-89...

Originally Posted by saber3469

how do I input the proper info on these problems on the ti-89 calculator


the square rootof 32 - the sqaure root if 50xx


how do i input the info for graphing on:


2x + 3y+=6
-8x - 12y =-24

I think you hit the "submit" button a few too many times.

What is 50xx?

To graph the two equations, first solve both for y. Then you go to the "y = " screen and put them into y1 and y2. Then go to your "graph" screen.

-Dan

To solve your linear equation, type in

simultd([2,3;-8,-12],[6;-24]) then ENTER.

You should get Error:Singular Matrix.

That's because one is a multiple of the other. There both essentially the same.

Another way is to use RREF([2,3,6;-8,-12,-24]).

You should get a row of 0's at the bottom. That' no good.