Good example. I know people frown on memorization, but personally I would say the following are useful to know deeply: - Log laws - Exponent laws - Derivativ

Good example. I know people frown on memorization, but personally I would say the following are useful to know deeply: - Log laws - Exponent laws - Derivative rules - Probability laws - Combinations/Permutations - Matrix algebra - more? When you're reading through math derivations, or trying to work one out yourself, you absolutely need to have some basic literacy in these rules.