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# What is meant by orders of matrices What is Triangular matrix

Asked by Jogy Jacob 8th March 2013, 10:09 PM
Order of a matrix gives the number of rows and columns present in the matrix.

For example,

A matrix is said to be a column matrix if it has only one column.

A = [aij]m x 1 is a column matrix of order m x 1

A matrix is said to be a row matrix if it has only one row.

B = [bij]1 x n is a row matrix of order 1 x n.

A triangular matrix is a special kind of square matrix. A square matrix is called lower triangular if all the entries above the main diagonal are zero. 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.
Answered by Expert 9th March 2013, 9:50 PM
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