Given that, `A=(aij)_(3xx3) =[(1,6,-1),(5,2,7),(1,3,-5)]_(3xx3)` then find the values: Where a denote the corresponding elements of the matrix A. `3/2 a_21 +1/2 a_11`

Explanation

To solve the problem, we need to evaluate the expression \( \frac{3}{2} a_{21} + \frac{1}{2} a_{11} \) using the elements of the given matrix \( A \).

1. **Identify the elements \( a_{21} \) and \( a_{11} \)**:
- The matrix \( A \) is given as:
\[
A = \begin{pmatrix}
1 & 6 & -1 \\
5 & 2 & 7 \\
...