O-LevelAdditional MathematicsVectors in two dimensions4037/12 · May/June 2010 · Q35 Marks
Given that OA = ( -17 / 25 ) and OB = ( 4 / 5 ) find
- (i)the unit vector parallel to AB,[3]
- (ii)the vector OC, such that AC = 3AB.[2]
Mark scheme
Marking points from the official mark scheme (May/June 2010). The mark or mark type is shown in brackets.
- B1 for AB
- M1 for magnitude of AB
- A1
- M1 for (-17/25) + 3AB
- A1
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