Mathematics (AS & A Level) · May / June 2019 · Paper 11 · Question 7

j i k O A B C D E F G M The diagram shows a three-dimensional shape in which the base OABC and the upper surface DEFG are identical horizontal squares. The parallelograms OAED and CBFG both lie in vertical planes. The point M is the mid-point of AF. Unit vectors i and j are parallel to OA and OC respectively and the unit vector k is vertically upwards. The position vectors of A and D are given by −−→ OA = 8i and −−→ OD = 3i + 10k.

Read automatically from the paper; the printed page above is exact.