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If vec a= hat i+ hat j+ hat k , vec b=4...

If ` vec a= hat i+ hat j+ hat k , vec b=4 hat i-2 hat j+3 hat k` and ` vec c= hat i-2 hat j+ hat k` , find a vector of magnitude 6 units which is parallel to the vector `2 vec a- vec b+3 vec cdot`

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