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Find a vector of magnitude 5 units, and...

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

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The correct Answer is:
`=(15)/(sqrt(10))hat(i)+(5)/(sqrt(10))hat(j)`
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MODERN PUBLICATION-VECTOR ALGEBRA -Frequently Asked Questions (Example)
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  14. If vec a and vec b are two unit vectors such that vec a+ vec b is a...

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  18. Three vectors vec(A) = 2hat(i) - hat(j) + hat(k), vec(B) = hat(i) - 3h...

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