Find a vector magnitude 5 units, and ...

Find a vector magnitude 5 units, and parallel to the resultant of the vectors ` vec a=2 hat i+3 hat j- hat k` and ` vec b= hat i-2 hat j+ hat kdot`

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Find a vector of magnitude 5 units and parallel to the resultant of the vectors vec a=2hat i +3hat j -hat k and vec b=hat i-2hat j+ hat k

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