Edexcel IGCSEMathematicsGeneral Applications4 Marks
The diagram shows a regular hexagon ABCDEF. The vectors AB = a and BC = b.
- (a)Find DE in terms of a and/or b.[1]
- (b)Find CE in terms of a and/or b. Give your answer in its simplest form.[3]
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
Mark scheme
Marking points from the official mark scheme. The mark or mark type is shown in brackets.
- (a) B1 for –a
- (b) M1 for a correct path from C to E, e.g. CD + DE or CB + BA + AF + FE
- (b) M1 (dep) for CD = –a, FE = –b, AF = 2b (or similar uses of properties of regular hexagon)
- (b) A1 for a – 2b or –2b + a
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