Construct a 3×4 matrix A = [ajj] whose elements ajj are given by :
ajj = i + j
Let A = [aij]2×3
So, the elements in a 3×4 matrix are
a11, a12, a13, a14, a21, a22, a23,a24,a31,a32,a33,a34
A = ……(1)
a11 = 1 + 1 = 2 a12 = 1 + 2 = 3 a13 = 1 + 3 = 4 a14 = 1 + 4 = 5
a21 = 2 + 1 = 3 a22 = 2 + 2 = 4 a23 = 2 + 3 = 5 a24 = 2 + 4 = 6
a31 = 3 + 1 = 4 a32 = 3 + 2 = 5 a33 = 3 + 3 = 6 a34 = 3 + 4 = 7
So, from (1)
A =