I'm a linear algebra weakling and am looking for help anywhere I can find it.
I'm attempting to calculate the inverse of a 14x14 square matrix using Gauss-Jordan elimination. This seems to work for some matrix input, but not all. I end up with an almost zero value on the diagonal, which really blows up the scaling of the values in the matrix.
I'm comparing my results to those calculated by Matlab. For my initial set of matricies, the results match (within rounding differences). But for the following matrix, they do not. (sorry for the large data set: if there's a better way to show this please let me know).