1.

Let a=2bari + barj-bark and barb = barI +3bark. If barc is a unit vectors such that [bara barb barc] is maximum, then barc is

Answer»

`1/(SQRT14)(3bari+barj+2bark)`
`1/(sqrt6)(2bari+barj-bark)`
`1/(SQRT10)(bari+3bark)`
`1/(SQRT(59))(3bari-7barj-bark)`

Answer :D


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