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If vec(x) is a vector in the direction ...

If `vec(x)` is a vector in the direction of (2, –2, 1) of magnitude `6andvec(y)` is a vector in the direction of (1, 1, –1) of magnitude `sqrt(3)` ,then `|vec(x)+2vec(y)|=`......

A

40

B

`sqrt(35)`

C

`sqrt(17)`

D

`2sqrt(10)`

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The correct Answer is:
D
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