Hello can you help me with this, Thank you.

1. If u = [2, -4, -1] and # = [1, -2, 4] find: a) 36 - u [2 marks] b) lu + 20 - 2k| [3 marks] c) Find G, where F(2, -3, 4) and FG = 30 [3 marks] 2. If d = [m, n, 1] is perpendicular to both a = [5, 1, -2] and b = [3, -3, 6], find m and n. [3 marks] Page 2 of 6 3. If lul = 6, |#| = 12 and the angle between these vectors is 830, determine a) u xu [2 marks] b) u u [2 marks]