Upper triangular ought to be interpreted as obtaining only zero entries down below the primary diagonal, which begins at the upper left corner. Case in point[edit] Within the lessen triangular matrix all things over the diagonal are zero, in the higher triangular matrix, all The weather beneath the diagonal http://augustrwbfj.ampblogs.com/The-best-Side-of-how-t-u-an-l-b-d-33144623