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If veca=hati+hatj+hatk,vecb=2hatj-hatj+3...

If `veca=hati+hatj+hatk,vecb=2hatj-hatj+3hatkandvecc=hati-2hatj+hatk`, find a unit vector parallel to the vector `2veca-vecb+3vecc`.

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The correct Answer is:
`(3)/(sqrt(22))hati-(3)/(sqrt(22))hatj+(2)/(sqrt(22))hatk`
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