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JEE Main 2015Medium

Q.If the vectors PQ⃗=3i^+2j^−k^\vec{PQ} = 3\hat{i} + 2\hat{j} - \hat{k} and PR⃗=−i^+3j^+2k^\vec{PR} = -\hat{i} + 3\hat{j} + 2\hat{k} then the vector QR⃗\vec{QR} is

a
−4i^+j^+3k^ -4\hat{i} + \hat{j} + 3\hat{k}
b
4i^−j^−3k^4\hat{i} - \hat{j} - 3\hat{k}
c
−4i^−j^−3k^ -4\hat{i} - \hat{j} - 3\hat{k}
d
4i^+j^+3k^4\hat{i} + \hat{j} + 3\hat{k}

Correct Answer: Option A

The correct solution involves applying the fundamental concept to derive the final value step by step...

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