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1 Unit 1: Pure Mathematics A

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Question 186

The points A A\,A and B B\,B have position vectors a=7i−5j\mathbf{a} = 7\mathbf{i} - 5\mathbf{j}a=7i−5j and b=−2i+3j\mathbf{b} = -2\mathbf{i} + 3\mathbf{j}b=−2i+3j.

a.

Find AB⃗\vec{AB}AB.

[2]
b.

Find the exact distance ABABAB.

[2]
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1 Unit 1: Pure Mathematics A Questions

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