Online graphing calculator plox?

Perferbably one that can do the matrix.

Not this kind of Matrix:


This kind of matrix:
[1 1 4]
[4 4 3]
[3 1 1]

; ; Like seriously, I have to do matrix homework by tomorrow, and I don't have a calculator that can do it.

HAAAAALP MEEEEEH! :why?:

Or maybe someone wants to get on MSN and plug in these problems for me on their graphing caculator? ^^;

Anything.

 

I would totally help...but...I have no idea how to use matrix on my calculator. :lolface: All I can say is hope Terra's on.

 

o.o

*Zooms to get help from what it seems like only math genius* XDX

 

Hey! I'm good at math too! IN fact, I"M VERY good at math. I'm just not as good as him. I'm just not that much of an over achiever and have no idea what the hell a matrix is.

 

...I'm actually good with matrices, so I can probably help you. xD

 

oooh, I love those.
I would help, but I tried adding you on MSN the other day and yeah...

 

The key with the matrix is to remember there is no spoon.

 

Lol! Okay, okay! ^^ I believe ya. Matrix is hard for me too. :sweat:

*Happeh face* :3

O.o I'm stuck with online messenger... so.... yeah, I don't get requests for MSN. *Just realized this* >< *Facedesks*

...Wut? o.O


Anyways... I need someone to find the determent of these matrixes:

3x3

[1 2 1]
[-1 3 5]
[1 -1 -3]
________
[1 2 1]
[-1 3 2]
[1 -1 1]

Then also this one (cause it's in the same problem):

[1 1 2]
[-1 5 2]
[1 -3 -1]
_________
[(Same denominator as the first equation/matrix set)]


Terra already got the first one that's not on here. :3

Weeee, thanks for the help in advance! ^^

 

I just thought you didn't like me. D:

 

No! I love everyone! I sweaaaar! ; ; Just online messenger won't let me have new friends. T_T My original MSN fails epically and never lets me log onto it

 

Yeaaaah, I'm not one usually asking for help... But I lack the caculator and my math teacher only taught us the caculator way. Not by hand. DX

 

Well, if I've done it right, both come out to be -2/9.

You may want to double check because I did it by hand and yeah. xD

 

Terra got the same answer. ^^

And now I'm dooone with that worksheet! Thanks everyone!

Anyone want to stick around to help me with Finding the inverse of the matrixes? :3

 

It's a good thing I'm like a walking TI-84.
And by that, I mean that I own a TI-84.

 

Yeahness. <3

Okay so the problem is:

Use a graphing calculator to find the inverse of the matrix, if it exists-

[0 2 5]
[4 4 3]
[-2 1 4]

Also, there's these two little devils that need caculator work

Solve the Matrix equation-

[1 2 -1] [4] [6]
[0 1 2] X - [1] = [19]
[2 2 -1] [3] [-3]

(Here's the second problem)

[2 4 2] [-1 4 1] [7 2 1]
[2 -2 8] X - [6 9 -1] = [6 9 5]
[4 8 6] [2 -1 4] [3 4 6]

Okaaaaay... thanks for the help again.

 

Here, try this. It won't work unless you have a rom image from a TI Calculator, but you can find it pretty easily with a quick prayer to Mother Google.
http://www.ticalc.org/archives/files/fileinfo/84/8442.html

 

Are you serious when you say the teacher won't teach you how to actually find the determinants and stuff, but will only tell you how to use the calculator?