Recent content by sarahfh

If you have a matrix that is a combination of a diagonal, upper, and lower matrix - what is the best way to solve it? (I use MATLAB for matrix work) Example: 5 1 0 0 x1 1 -1 5 1 0 x2 2 0 -1 5 1 x3 3 0 0 -1 5 x4 4 Is it possible to solve...