1.

bara=bari-barj+3bark , barb =3bari-5barj+6bark. " the magnitude of the projection of " 2bara-barb " on " bara+barb is

Answer»

`(22)/(SQRT10)`
`(22)/(sqrt133)`
`(11sqrt2)/(sqrt10)`
`(22)/(SQRT5)`

ANSWER :B


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