Question

Write the order of matrices:
(i) $\left[\begin{array}{ccc}2&-3\\0&4\end{array}\right]$
(ii) $\left[\begin{array}{cccc}1&0&3&4\end{array}\right]$
(iii) $\left[\begin{array}{ccc}1\\2\\3\end{array}\right]$

Answer 1

Concept:

Order or Size of a matrix A is the number of rows and columns occur in A

$\left[\begin{array}{ccc}2&-3\\0&4\end{array}\right]$

contains 2 rows and 2 columns.

It's order is 2 x 2

$\left[\begin{array}{cccc}1&0&3&4\end{array}\right]$

contains 1 rows and 4 columns.

It's order is 1 x 4

$\left[\begin{array}{ccc}1\\2\\3\end{array}\right]$

contains 1 rows and 3 columns.

Its order is 3 x 1