Construct 2×2 matrix,A=[aij] whose elements are given by (ii)aij=(i)j
Here, A=[a11a12a21a22]2×2, where aij=ij. ∴a11=11=1,a12=12,a21=21=2 and a22=22=1 Hence, the required matrix is A=[21221]2×2
Construct a 2 × 2 matrix by A = [aij] whose elements are given by aij= 2i – j