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5. If veca = hati +hatj-4hatk and vecb =...

5. If `veca = hati +hatj-4hatk` and `vecb = 4hati-hatj-2hatk` , then find (i) a unit vector in the direction of the vector `(2 veca- vecb)` and (ii) vector and scalar components of the vector `(2 veca -vecb)` along coordinate axes.

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