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FabianMontescu
The problem set 3 refers to some equations that I couldn't find. For example, problem 2-A10 reads: Derive (9), (10), (12) by using formula (13). Where are these formulas?
This is not the answer to the question, but it helps if with exercises 2A-1 to 2A-4: Formula (2) there means the formula for the linear approximation of \[(1+x)^r \approx 1 + rx\],
I am not positive, but I did not find this referring to things in his notes, so I believe it is referring to items in the recommended text.