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I'm somewhat confused about the notation in problem 4c of http://www.its.caltech.edu/~hmabuchi/Ph125a/HW1.pdf

In part a, I found the matrix R. I was wondering what was meant by a,b exist in R. My guess is that R in the latter case refers to the set of all real numbers, and that the R in v = a*R + b*R^2 is the matrix R corresponding to the observable r.

Could somebody confirm, or am I totally off?

Also, I'm not sure how to intepret what v is.

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# Question about notation in Matrix problem

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