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Sorry if this is the wrong forum. Someone bump it across if its not.

This is a question on one of my tests (im doing my first semester of Physics at university) and its got to do with the program Matlab.

We have two vectors u and v. Which of the following gives us the unit vector in the direction of v, starting from u?

a) (v-u)/(u*u')

b) (v-u) * (v - u)

c) (v-u)./mag(v-u)

d) (v-u) / (sqrt(v-u)*(v-u)')

'I understand some basic matrix algebra, but im still pretty spun out about matrices. can someone guide me through this? (a) thanks!

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# Matrices and Matlab Problem

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