• A matrix is an ordered rectangular array of numbers or functions arranged in rows and columns. A matrix having m rows and n columns is called a matrix of order m x n. In general, an m × n matrix is represented as below:
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• Let A = [aij] m x n and B = [bij] m x n be two matrices of same order m x n. Then the sum of the two matrices A and B is defined as a matrix
C = [cij] m x n where cij = aij + bij for all possible values of i and j.
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• Inverse of a square matrix is same as the reciprocal of a number. Inverse of square matrix A is denoted as A–1.
• Product of a square matrix and its inverse is always a identity matrix of the same order that is AA–1 = I..... Read More