Question

How to generalise triangular matrix method for 3 dimension?

Answer 1

In the mathematical discipline of linear algebra, a triangular matrix is a special kind of squarematrix. A square matrix is calledlower triangular if all the entries above themain diagonal are zero. Similarly, a square matrix is called upper triangular if all the entries below the main diagonal are zero. A triangular matrix is one that is either lower triangular or upper triangular. A matrix that is both upper and lower triangular is called adiagonal matrix.