Dimensions of a Matrix

• The matrix has 1 row and 3 columns. So the dimensions of this matrix is 1 x 3.

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   The matrix has 3 rows and 3 columns. So the dimension of this matrix is 3 x 3. Also called a Square matrix.

   





• The matrix has 3 rows and 2 columns. So the dimensions of this matrix is 3 x 2.

• The matrix has 3 rows and 3 columns. So the dimension of this matrix is 3 x 3. This matrix is an identity matrix.