Construct a 4 × 3 matrix A = [ajj] whose elements ajj are given by :
Let A = [aij]4×3
So, the elements in a 4×3 matrix are
a11, a12, a13, a21, a22, a23,a31,a32,a33,a41, a42, a43
A = ……(1)
a11 =
a12 =
a13 =
a21 =
a22 =
a23 =
a31 =
a32 =
a33 =
a41 =
a42 =
a43 =
So, from (1)
A =