I need help with this:

Question 7 Suppose that B = {V1, V2, V3} is a basis for IR3 , where -4 point V1 = , and V3 = 2 -20 Let V = 5 be a vector in IR3 . Find the coordinate vector of v with respect to B. You may find the following reduction useful. -4 -4 20 2 -4 -20 2 The matrix 1 1 2 5 , by Maple, is reduced to 0 1 0 2 0 0 0 -14 -14 3 Enter your answer in the box below, in Maple syntax. [VB = Note: The vector b , in Maple syntax, should be entered as