If A = [aij] is a 2 × 2 matrix such that aij = i + 2j, write A.
Given: A = [aij] is a 2 × 2 matrix
…(i)
Given that aij = i + 2j
So, a11 = 1 + 2 × 1 = 1 + 2 = 3
a12 = 1 + 2 × 2 = 1 + 4 = 5
a21 = 2 + 2 × 1 = 2 + 2 = 4
a22 = 2 + 2 × 2 = 2 + 4 = 6
Putting the values in eq. (i), we get