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यदि `veca=2hati+hatj-3hatk, vecb=3hati-2hatj+hatk` तथा `vecc=hati+hatj+hatk` तो `-veca+2vecb+3vecc` का मान ज्ञात किजिये।

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यदि `veca=2hati+hatj-3hatk, vecb=3hati-2hatj+hatk` तथा `vecc=hati+hatj+hatk` तो `-veca+2vecb+3vecc` का मान ज्ञात किजिये।
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`-veca+2vecb+3vecc`
`=-(2hati+hatj-3hatk)+2(3hati-2hatj+hatk)+3(hati+hatj+hatk)`
`=(-2hati-hatj+3hatk)+(6hati-4hatj+2hatk)+(3hati+3hatj+3hatk)`
`=(-2hati+6hati+3hati)+(-hatj-4hatj+3hatj)+(3hatk+2hatk+3hatk)`
`=7hati-2hatj+8hatk`
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