## Precalculus (6th Edition) Blitzer

a) The order of the matrix is $3\times 4$. b) The identification of the elements is not possible due to ${{a}_{32}}=0\text{ and }{{a}_{23}}=\pi$.
(a) Since this matrix has three rows and four columns, therefore the order of the matrix is $3\times 4$. Hence, the order of the matrix $A$ is $3\times 4$. (b) The notation ${{a}_{23}}$ stands for the element present in the second row and third column of the given matrix. Therefore, ${{a}_{23}}=\pi$ Also, the,notation ${{a}_{32}}$ stands for the element present in the third row and second column of the given matrix. Therefore, ${{a}_{32}}=0$ Hence, the identification of the elements is not possible due to ${{a}_{32}}=0\text{ and }{{a}_{23}}=\pi$.