Defind Triangular Matrix.

Define triangular Matrix.

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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.

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.

Let A be a square matrix of order n . l = maximum number of different entries if A is a upper triangular matrix. m = minimum number of zeros if A is a triangular matrix. p = minimum number of zeros if A is a diagonal matrix. If l+2m=2p+1 , then n is :