Order of a matrix

The order of a matrix is given by (m x n), where m is the number of rows and n is the number of columns. Because the number of columns of W equals the number of rows in the column vector describing the position Q, the two matrices are conformable and they can be multiplied (noting that matrix multiplication is not commutative, SW). 

The class Q =E is always represented by the unit matrix. If the order of a matrix is called its dimension d, it can be shown that ... 

The order of a matrix is defined as the number of rows and columns. If the order is 4 x 5 then it has 4 rows and 5 columns. A square matrix has equal numbers of rows and columns. 

---

See also in sourсe #XX -- [ ]

---