questions below:

\fA certain experiment produces the data (3,7.5), (4,5.3), and (5, -0.3). Describe the model that produces a least-squares fit of these points by a function of the form y = A cos x + B sin x. 81 The model is y = XB + &, where y = X = , B= and & = 82 (Type an exact answer.) - 7.5 - 5.3 0.3 - 3 -4 - 5 7.5 5.3 - 0.3- 7 6 Let u = 2 and v= 4 . Compute and compare u -v, ||u||2, "VII2 and II u + VIIZ. Do not use the Pythagorean Theorem. - 17 2 " ' V = Cl (Simplify your answer.) Ilull2 = D (Simplify your answer.) \"V\"2 = D (Simplify your answer.) \"U + v\"2 = D (Simplify your answer.) The statements u - vat) and "u"2 + \"v"2 |::l ||u +v||2 both imply that the vectors u and v : orthogonal