1.

Let bara= 2bari+3barj+k,barb = 4bari+barj and bari = bari - 3barj-bark. " Find vector " barr " such that " barr.bara = 9, barr .barb = 7 and barr .barc =6.

Answer»

`bari+3barj+2bark`
`bari+3barj-2bark`
`bari-2barj+3bark`
`bari+2barj+5bark`

ANSWER :B


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