Gaussian Elimination

Calling Sequence:
GaussElim(A, b)
Parameters:

A	:	matrix(real)
b	:	array(real)

Returns: a vector (one dimensional array) of real.

Synopsis: Given a matrix of real values A and vector b, this function computes $A\cdot x = b$ by Gaussian elmination. A matrix is a two-dimensionsal square array.

Examples:

> GaussElim([[2,4,6], [9,0,27],[17,23,5]], [8, 15, 17]);