If and , then…

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

Problem

If a=(1,−2,3)\mathbf a=(1,-2,3) and b=(4,0,−1)\mathbf b=(4,0,-1), then a×b\mathbf a\times\mathbf b equals (a) −2i^−13j^−8k^-2\hat{i}-13\hat{j}-8\hat{k} (b) 2i^+13j^+8k^2\hat{i}+13\hat{j}+8\hat{k} (c) 2i^−13j^+8k^2\hat{i}-13\hat{j}+8\hat{k} (d) 2i^+13j^−8k^2\hat{i}+13\hat{j}-8\hat{k}

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