Best Calculator for Matrix/Linear Algebra?
Hi, any recommendations? Costco has some fancy TI's at decent prices right now (TI84 Plus Silver, TI89 Titanium).
Thanks, Howard 
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[1,0,0;0,1,0;0,0,1] and it will display it like: [tex] \left[ \begin{array}{ccc} 1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1 \end{array} \right] [/tex] However, do not depend on a calculator for the class. It will kill you. Use it only to check your answers. The more problems you do without your calculator, the more you will get a intuitive understanding of the topic. 
I second the TI89. As long as you have the self restraint, it can be a very valuable tool. Tedious manipulations when diagonalizing a matrix can be checked upon completion, which saved me a couple of points on homework assignments. Plus, a majority of the problems your calculator can do are problems you'll be asked to show work for, i.e. solving a system or finding an inverse.

its between your eyes.

my nose! of course. I have been doing this linear algebra thing all wrong...

I am an "old goat" just trying to relearn some old things and learn some new things. The thing between my eyes does not work as efficiently as it used to and is occupied with making a living, raising my three boys and keeping the boss happy. Plus, I like gadgets and have not bought a calculator since getting a TI58C 25 years ago, they have changed a bit since then! I also had an HP 11C as no selfrespecting engineering student would be without one in those days. It appears that TI is now in the lead, at least for graphing calculators.
Any comments on the TI Voyage 200? How big is it, is it any more useful then the 89? Howard 
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are your eyes in front? My advice was meant for a fish faced individual, like me.

Do fish really go m00?

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I had an hp48g during my first linear algebra class. It was oh so exciting to get it to find a 4x4 matrix inverse for me. about once. I found it was generally faster for most of the computations we had to do to just do them by hand. I can't say it was really beneficial for learning linear algebra.

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Here's a link. Check them out. http://cgi.ebay.com/NEWTEXASINSTRU...QQcmdZViewItem When/If my old TI92 kicks the bucket, that's what I'm buying. They're worth the money. Considering how much more you get, they're not that much more expensive than the 89. 
the point is that calculATORS ARE ONLY USEFUL For DOing CALCULATIONS YOU ALREADY UNDERSTAND. understanding them is the real challenge.

Any calculations small enough to plug into a hand calculator, it's easy enough to do on paper. Any larger calculations, should be left to Matlab.

Hey
Quick question I want to know if either the TI89 Titanium or the Voyage 200 will provide stepbystep solutions to calculus problems. :rolleyes: 
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Nope, i was actually planning on using it for my p.chem class. Which one do you think is best for pchem?

Re: Best Calculator for Matrix/Linear Algebra?
I recommend http://calculatoronline.org/s/matrix/. Example the solution A*B:
Given matrix A = [1 2 3] [3 2 1] [3 7 1] and B = [0 4 1] [3 3 1] [4 2 4] . Find the product A*B Consider the product A*B. The number of columns in the first factor A equal 3, number of rows in the second factor B also equal 3. The numbers coincide, therefore, the product is defined. The result is a matrix multiplication C = A*B, whose lines as much as them in the first factor, ie 3, and columns as much as them in the second factor, ie 3. So, matrix C has dimensions 3 x 3 Find: Element c1 1. In its computation involved 1th row [1 2 3] first factor A and 1th column [0] [3] [4] second factor B: c1 1 = (1) * (0) + (2) * (3) + (3) * (4) = 18; Element c1 2. In its computation involved 1th row [1 2 3] first factor A and 2th column [4] [3] [2] second factor B: c1 2 = (1) * (4) + (2) * (3) + (3) * (2) = 16; Element c1 3. In its computation involved 1th row [1 2 3] first factor A and 3th column [1] [1] [4] second factor B: c1 3 = (1) * (1) + (2) * (1) + (3) * (4) = 15; Element c2 1. In its computation involved 2th row [3 2 1] first factor A and 1th column [0] [3] [4] second factor B: c2 1 = (3) * (0) + (2) * (3) + (1) * (4) = 10; Element c2 2. In its computation involved 2th row [3 2 1] first factor A and 2th column [4] [3] [2] second factor B: c2 2 = (3) * (4) + (2) * (3) + (1) * (2) = 20; Element c2 3. In its computation involved 2th row [3 2 1] first factor A and 3th column [1] [1] [4] second factor B: c2 3 = (3) * (1) + (2) * (1) + (1) * (4) = 9; Element c3 1. In its computation involved 3th row [3 7 1] first factor A and 1th column [0] [3] [4] second factor B: c3 1 = (3) * (0) + (7) * (3) + (1) * (4) = 25; Element c3 2. In its computation involved 3th row [3 7 1] first factor A and 2th column [4] [3] [2] second factor B: c3 2 = (3) * (4) + (7) * (3) + (1) * (2) = 35; Element c3 3. In its computation involved 3th row [3 7 1] first factor A and 3th column [1] [1] [4] second factor B: c3 3 = (3) * (1) + (7) * (1) + (1) * (4) = 14; So, C = [18 16 15] [10 20 9] [25 35 14] 
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