यदि `vec(OA)=2hati-hatj=hatk` तथा `vec(OB)=5hati+3hatj-hatk` तो `vec(AB)` का मान निकालिये।

Answer

`3hati+4hatj-2hatk`

Explanation

`vec(AB)=vec(OB)-vec(OA)`
`=(5hati+3hatj-hatk)-(2hati-hatj+hatk)`
`=(5-2)hati+(3+1)hatj+(-1-1)hatk=3hati+4hatj-2hatk`