If and , then…

MATHEMATICS · Single correct · CBSE · Mathematics · Vector Algebra · Vector Algebra

Problem

If a=3i^−4j^\mathbf{a}=3\hat{i}-4\hat{j} and b=−5i^+2j^\mathbf{b}=-5\hat{i}+2\hat{j}, then a−b\mathbf{a}-\mathbf{b} equals (a) −8i^+6j^-8\hat{i}+6\hat{j} (b) 8i^−2j^8\hat{i}-2\hat{j} (c) 8i^−6j^8\hat{i}-6\hat{j} (d) −2i^−6j^-2\hat{i}-6\hat{j}

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