1.

The vector area of the triangle formed by the points vec(i) -vec(j) + vec(k), 2vec(i) + vec(j) -2vec(k) and 3vec(i) + vec(j) + 2vec(k) is

Answer»

`4 VEC(i) -(7)/(2) vec(j)- vec(k)`
`4vec(i) + (7)/(2) vec(j) + vec(k)`
`4vec(i)-7vec(j) + 2vec(k)`
`vec(i) -vec(j) + vec(k)`

Answer :A


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