Question
For a $2\times 2$ matrix $A = [a_{ij}] $ whose elements are given by $\text{a}_{\text{ij}}=\frac{\text{i}}{\text{j}},$ write the value of $a_{12}.$

Answer

Given that a $2\times 2$ matrix $A = [a_{ij}]$ whose elements are given by $\text{a}_{\text{ij}}=\frac{\text{i}}{\text{j}}.$
We need to find the value of $a_{12}.$
Thus, $\text{a}_{12}=\frac{1}{2}.$

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