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Mathematic Economics Test 07 one question 2015 Test 04 One questoin, prove KKT by using Farka’s lemma. Old notes Practice Dot Product and Angle Dot Products, Norms, and Angles Between Vecto...

A New Post Dot Products, Norms, and Angles Between Vectors. Recall that the Law of Cosines, a generalization on the Pythagorean Theorem, gives us the relationship between the side lengths of an a...

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R and timeseries Best packages: lubridate How to deal with date and time in R Extracting elements from a date/time Once your date/time data in in POSIXct format, it is easy to extract parts of ...

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