Construct a 2 × 2 matrix A = [ajj] whose elements ajj are given by :
Let A = [aij]2×2
So, the elements in a 2×2 matrix are
a11, a12, a21, a22,
A = …… (1)
a11 =
a12 =
a21 =
a22 =
So, from (1)
A =