Question

For a 2 × 2 matrix A = [a_ij] whose elements are given by 

\[a_{ij} = \frac{i}{j}\] , write the value of a₁₂.

 

Answer 1

\[Here, \] 

\[ a_{ij} = \frac{i}{j}\] 

\[1 \leq i \leq 2 \] 

\[1 \leq j \leq 2\] 

\[ \Rightarrow a_{12} = \frac{1}{2}\] 

Therefore, the value of `a_12`   is  `1/2 .`