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Question: If \(\mathbf{a} = 3\mathbf{i} - \mathbf{j} + 2\mathbf{k},\) \(\mathbf{b} = 2\mathbf{i} + \mathbf{j} ...

If a=3i−j+2k,\mathbf{a} = 3\mathbf{i} - \mathbf{j} + 2\mathbf{k}, b=2i+j−k,\mathbf{b} = 2\mathbf{i} + \mathbf{j} - \mathbf{k}, then a×(a.b)=\mathbf{a} \times (\mathbf{a}.\mathbf{b}) =

A

3a

B

3143\sqrt{14}

C

0

D

None of these

Answer

None of these

Explanation

Solution

a×(a.b)\mathbf{a} \times (\mathbf{a}.\mathbf{b}) is not meaningful.