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vector ˆ i − 3 ˆ j + 4 ˆ k .Find the ma...

vector ˆ i − 3 ˆ j + 4 ˆ k .Find the magnitude of the vector

A

There is exactly one choice for such `vecv`

B

There are infinitely many choices for such `vecv`

C

If `hatu` lies in the xy-plane, then `|u_1|=|u_2|`

D

If `hatu` lies in xz-plane, the `2|u_1|=|u_3|`

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