Question

contruct a 2×2 matrix A=[ajj] whose elements are given by [i+j]\2

Answer 1

very easy.... just make a square of 2 by 2...means [11 12]
[21 22]
put the value of i and j in that square.
like for 11 element....i =1 nd j also 1.
so i +j/2= 1+1/2 =1 .
similar put i =1 j=2.