Please answer urgently!

Part 1: Knowledge / Understanding [15 marks] 1. If u = [2, -4, -1] and v = [1, -2, 4] find: a) 30 - u [2 marks] b) lu+ 20- 2k| [3 marks] c) Find G, where F (2, -3, 4) and FG = 31 [3 marks] 2. If c = [m, n, 1] is perpendicular to both a = [5, 1, -2] and b = [3, -3, 6], find m and n. [3 marks]