This is a collection of small programs, including some on
matrices, which you can type in yourself or download. They
perform a multitude of small tasks, some that are so easy you'll
wonder why I wrote a program for them, some that are really
cool. For FAR more information click here.
Author: Colin Croft
This is a program not an aplet and
must be downloaded into the Program Catalog. To quote the author:
"It lets students quickly do matrix calculations. The problem with matrices
is that you have to switch from HOME to the Matrix Catalog to do calculations.
By the end of it all, the exam's over, the examiner is pulling your paper
away and you've pulled out your hair due to frustration. Hence this program.
It displays a list of matrix calculations you can perform (add, subtract,
inverse etc..). It then asks you for two matrices, M1 and/or M2. Results
are displayed & stored in M1. It even detects when calculations aren't
possible. While this may sound lengthy, it does take place a lot faster.
It comes with a help file. At the moment, it is limited in only working
with M1 or M2, but there are ways around that. I'll also work on a new
version that let's you work with (hopefully) as many matrices as possible,
but that may not be anytime soon. Until then this doesn't leave me bald
at the end of an exam."
Author: Jarryd Pinto
Gauss Jordan Operations
This aplet was created by Roso Giuseppe (Beppe) and allows the
user to perform the Gauss Jordan algorithm on a matrix using
full row pivoting. More such advanced matrix manipulation
programs may be added to this section so check back later. Note: The 38G version will probably not become
This aplet allows the student to apply elementary row
operations to an augmented matrix. It is a teaching aplet to
illustrate the processes involved, not a serious solver of
problems. If you want to solve n x n systems then
use the RREF function. More Information
Author: Colin Croft
An easy adaption of the Parametric aplet allows the student to
investigate geometric transformations using 2x2 matrices. It is very
easy to create it yourself
instead of downloading it and it is a fantastic teaching tool -
my class deduced all the basic 2x2 transformation matrices for
themselves in less than an hour. The only drawback of
creating it yourself is that you can't then transfer it to your
students' calculators - there's a bug in the calculator that
scrambles the equations in the SYMB view when you try
(not every time but...). On the other hand, it's very simple to
create and the class will understand what's going on better if
they create it themselves.
For those of you who are lazy, I have also created a fully
programmed version with the usual VIEWS menu. You can
download that by clicking on the appropriate link to the right.
The advantage of this is that the equations get automatically
reloaded when you press START and so the scrambling bug
doesn't matter. More Information
Note1: This aplet has been updated
Note2: And again (15/5/04)