Question

contruct a (2*3) matrix whose elements are given by Aij=i+j

Answer 1

Let the matrix be A = [  a11     a12     a13  ] first row and  [  a21    a22  a23  ]  second row

Now, a11= 1+1= 2 ; a12= 1+2 = 3 ; a13= 1+3= 4 ; a21= 2+1= 3; a22= 2+2 = 4 ; a23= 2+3  = 5

thus, A= [ 2      3    4  ] first row and  [  3     4     5  ] second row