Mathematics · 2013
JEE Main · 9 April 2013, Shift 1 · Q79
The vector ( i × a · b ) i +( j × a · b ) j +( k × a · b ) k is equal to:
The vector $\displaystyle (\hat{i} \times \overrightarrow{\mathrm{a}} \cdot \overrightarrow{\mathrm{b}}) \hat{i}+(\hat{j} \times \overrightarrow{\mathrm{a}} \cdot \overrightarrow{\mathrm{b}}) \hat{j}+(\hat{k} \times \overrightarrow{\mathrm{a}} \cdot \overrightarrow{\mathrm{b}}) \hat{k}$ is equal to :
Official answer
(3)
$\displaystyle \overrightarrow{\mathrm{a}} \times \overrightarrow{\mathrm{b}}$
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JEE Main 2013 Mathematics question, with the answer from NTA’s final answer key. Where our answers come from.