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1.13 J: Vectors

1.13 J: Vectors

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Question 13

In triangle OABOABOAB, OA⃗=a\vec{OA} = \mathbf{a}OA=a and OB⃗=b\vec{OB} = \mathbf{b}OB=b.

The point P P\,P divides AB AB\,AB in the ratio 2:32 : 32:3, and Q Q\,Q is the midpoint of OBOBOB.

a.

Find OP⃗\vec{OP}OP in terms of a\mathbf{a}a and b\mathbf{b}b.

[2]
b.

Find QP⃗\vec{QP}QP​ in terms of a\mathbf{a}a and b\mathbf{b}b, simplifying your answer.

[2]
c.

The point R R\,R lies on the line OA OA\,OA produced, with OR⃗=λa\vec{OR} = \lambda\mathbf{a}OR=λa. Given that QQQ, P P\,P and R R\,R are collinear, find the value of λ\lambdaλ.

[3]
Markscheme

1.13 J: Vectors Questions

  1. A Level
  2. /Maths
  3. /1.13 J: Vectors

168 exam-style questions on AQA A Level Maths 1.13 J: Vectors, covering 1.13.1 Vectors in two and three dimensions, 1.13.2 Magnitude and direction of a vector, 1.13.3 Vector arithmetic, 1.13.4 Position vectors, and 1.13.5 Vectors to solve problems. Each one has a worked solution and a mark scheme showing where the marks go.

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