Homework: Section Question 1, 12.2.1 122 Part 2 of 2 Let u = (2, - 1). Find the component form and magnitude (length) of the vector 3u. E The component form is 3u = (6, - 3). (Simplify your answers.) The magnitude is I3u| = D. (Type an exact answer, using radicals as needed.) Homework: Section Question 2, 12.2.3 . (Simplify your answers.) The magnitude is I6u - 4v| = E (Type an exact answer, using radicals as needed.) Let u = (7, - 6) and v = ( 5,6). Find the (a) component form and (b) magnitude (length) of the vector