NCERT Miscellaneous Exercise Q7 - Vector Algebra

Question: If a = i-hat+j-hat+k-hat, b = 2i-hat-j-hat+3k-hat and c = i-hat-2j-hat+k-hat, find a unit vector parallel to 2a - b + 3c.

Answer: ± (3 i-hat - 3 j-hat + 2 k-hat)/sqrt(22).

Full step-by-step NCERT solution with diagrams on Something by Zero.

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