Define triangular Matrix.

Defind Triangular Matrix.

Define a singular matrix.

Give an example of a matrix which is a lower triangular as well as upper triangular matrix.

Give an examples of a matrix which is a lower triangular as well as an upper triangular matrix.

A matrix A=[a_(ij)] is an upper triangular matrix, if

A matrix A=[a_(ij)] is an upper triangular matrix, if

Give an example of a row matrix which is also a column matrix a diagonal matrix which is not scalar (iii) a triangular matrix.

Give an example of (i) a row matrix which is also a column matrix (ii)a diagonal matrix which is not scalar (iii) a triangular matrix.

Give an example of a 3xx3 lower triangular matrix.