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Let veca=hati+4hatj+2hatk,vecb=3hati-2ha...

Let `veca=hati+4hatj+2hatk,vecb=3hati-2hatj+7hatk and vecc=2hati-hatj+4hatk`. Find a vector `vecp` which is perpendicular to both `veca and vecb` and `vecp.vecc=18`.

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The correct Answer is:
`p=64hati - 2hatj - 28hatk`
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