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If veca satisfies vecaxx(hati+2hatj+hatk...

If `veca` satisfies `vecaxx(hati+2hatj+hatk)=hati-hatk" then " veca` is equal to

A

`-1/3(2hati+hatj+2hatk)`

B

`hatj`

C

`1/3(hati+2hatj+2hatk)`

D

`hati`

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The correct Answer is:
A
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