software/matlab
Matlab
Warning
Stub, just getting started
cyclismo.org has a good tutorial.
Matrix Syntax
Create a new matrix:
A = [1,2,3,4]
Select the first element of a matrix, zeroindexed:
A(1)
Create a one dimensional matrix:
B = [ [1,2,3], [4,5,6], [7,8,9] ]
Create a two dimensional matrix:
 B = [ [1,2,3],
[4,5,6], [7,8,9] ]
Matrix Operations
inv

inverts a square matrix
MetaCommands
Placing a semicolon at the end of a line prevents the output from being printed to screen.
whos

Displays variables and their size
format long
/format short

Selects either 4 or 14 decimal place display