Question

what is the gaussian thingy of matrices and how is it used?

Answer 1

do you mean
http://en.wikipedia.org/wiki/Gaussian_elimination

Answer 2

i think so...it's the one with the \[\huge \left[\begin{array}{ccc} 1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1 \end{array} \right]\]

Answer 3

this is used to reduce matrices in row echelon form or diagonal matrix using basic row -column operations which are used in turn for various purposed like solving linear system.
http://en.wikipedia.org/wiki/Gaussian_elimination#Example

Answer 4

O.O im not familiar with those terms so i dont think it's how we'll apply them

Answer 5

is there a simpler use of it?

Answer 6

solve
x + 2y = 3
4x + 5y = 6
using this algoritm ... change it into

Answer 7

this is cramer's right?