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If the volume of parallelopiped formed by the vectors i + λj + k, j + λk and  λi + k is minimum, then λ is equal to :

(1) - 1/√3

(2)  √3

(3)  1/√3

(4)  -√3

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Correct option  (3)  1/√3


Volume of parallelopiped

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