matrix methods an introduction
... + a 1n x n = b 1 a 21 x 1 + a 22 x 2 + ... + a 2n x n = b 2 ... a m1 x 1 + a m2 x 2 + ... + a mn x n = b m can be written as: A·X = B where: A is the coefficient matrix, X is the vector of variables, B is the constants vector. Methods for Solving Systems Gaussian