Q1/A/ Let u=5i-j+k, v=j-5k, w =-15i+3j-3k. Which vectors, if any, are a) Perpendicular? b) Parallel? Give reasons for your answers and verify your solution by sketch the graph. 2j (5-j3) (2+j)(l+j4) B) Given that (2a+jb)+(b-j3a)=- Obtain the values of a and b.

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