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Year 12 Specialist (Unit 3 & 4) Vectors

Scalar product of vectors

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Question 1
162760

\(a=i-j+2 k, \; b=2 i+j-k\). Find
i) \(a \cdot b\)
ii) \(b\cdot b\)

i) \(-1\)
ii) \(6\)

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