Construct a 2 ×3 matrix A = [a jj ] whose elements a jj are given by : a ij = i + j

Question

Philoid · Accepted Answer

Let A = [a_ij]_2×3

So, the elements in a 2×3 matrix are

a₁₁, a₁₂, a₁₃, a₂₁, a₂₂, a₂₃

A = …… (1)

a₁₁ = 1 + 1 = 2 a₁₂ = 1 + 2 = 3 a₁₃ = 1 + 3 = 4

a₂₁ = 2 + 1 = 3 a₂₂ = 2 + 2 = 4 a₂₃ = 2 + 3 = 5

So, from (1)

A =