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If bara=hati+hatj,barb=2hati-hatj and ba...

If `bara=hati+hatj,barb=2hati-hatj` and `barr=2hati-4hatj,` then express `vecr` as linear combination of `bara ` and `barb`

A

`barr=2bara+2barb`

B

`barr=-2bara+2barb`

C

`barr=2bara-2barb`

D

`barr=-2bara-2barb`

Text Solution

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The correct Answer is:
B
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