1.

The vector equation of the line passing through (2, 1, -1) and parallel to hati+2hatj+hatk is

Answer»

`barr=hati+2hatj+hatk+lambda(2hati+hatj-hatk)`
`barr=2hati+hatj-hatk+lambda(hati+2hatj+hatk)`
`barr=-hati-2hatj-hatk+lambda(-2hati-hatj+hatk)`
`barr=-2hati-hatj+hatk+lambda(-hati-2hatj-hatk)`

ANSWER :B


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