Problem 3 Rewrite each problem minimize, f(x) as a LS problem. Specify matrix A and vector b, and then solve the problem. (a) f(x) = (2x₁ - x₂ + 1)² + (x₂ − x3)² + (x3− 1)² (b) f(x) = (1 - ₁)² + Σ₁=₁(x₂ − xj+¹)²

Fig: 1