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In the matrix $A=\left[\begin{array}{rrrr}2 & 5 & 19 & -7 \\ 35 & -2 & 5 / 2 & 12 \\ \sqrt{3} & 1 & -5 & 17\end{array}\right]$ write
(i) The order of the matrix
(ii) The number of elements
(iii) Write the elements $a_{13}, a_{21}, a_{33}, a_{24}, a_{23}$
(i) The order of the matrix
(ii) The number of elements
(iii) Write the elements $a_{13}, a_{21}, a_{33}, a_{24}, a_{23}$
Solution:
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Verified Answer
(i) The matrix A has three rows and 4 columns. The order of the matrix is $3 \times 4$.
(ii) There are $3 \times 4=12$ elements in the matrix $\mathrm{A}$
(iii) $\mathrm{a}_{13}=19, \mathrm{a}_{21}=35, \mathrm{a}_{33}=-5, \mathrm{a}_{24}=12, \mathrm{a}_{23}=\frac{5}{2}$.
(ii) There are $3 \times 4=12$ elements in the matrix $\mathrm{A}$
(iii) $\mathrm{a}_{13}=19, \mathrm{a}_{21}=35, \mathrm{a}_{33}=-5, \mathrm{a}_{24}=12, \mathrm{a}_{23}=\frac{5}{2}$.
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