For the given vectors U = = [³], v = = -2. Answer the following questions: (1) Find the angle 0 between u and v. (2) Check the Schwarz inequalities |u • v | ≤ ||u|| ||v||. 5. Find the linear combination 25₁ +35₂ + 4S3 = b. Then write b as a matrix-vector multiplication Sx. Compute the dot products (row of S). x. 0 0 $1 = ·- -- -- -0 -[i] 1 go into the columns of S.