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6.3-4 Matrix Operations

# 6.3-4 Matrix Operations - 6. .Amatrixwith ,....

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6.3 BASIC MATRIX OPERATIONS A matrix is a rectangular array of numbers consisting of horizontal rows and vertical columns.  A matrix with  m  rows and  n  columns has dimension m  ×  n, with the rows always given first.  A matrix with only one row is  called a row matrix.  A matrix with only one column is called a column matrix.  A matrix with the same number  of rows and column is called a square matrix. Give the dimensions of the following matrices: 1. A =  [ ] - 5 2 1 0 B - = 5 6 2   C - - = - - 2 1 4 5 3 2 4 6 0 7 9 2 D - = - - 2 1 4 3 2 4 0 7 9 Addition and Subtraction of Matrices:   In order to add or subtract two or more matrices, they must each have  the same dimensions.  If so, then the corresponding elements of each matrix may be added or subtracted.

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