Next, we use\mathbbfunction. Here are five examples using LaTeX to write expected value of a random variableX: \documentclass[12pt]{article}\usepackage{amssymb}$$\mathbb{E}[X]=\sum_{i=1}^{n}x_i\cdotp_i$$$\mathbb{E}[X]=\frac{\displaystyle\sum_{i=1}^{n}x_i\cdotp_i}{\dis...
(BTW, you can shorten your latex a bit by using just double-dollar, instead of double-hash and \displaystyle.} Why use the Zassenhaus formula and not the BCH formula? Oct 30, 2016 #6 strangerep Science Advisor 3,766 2,212 failexam said: Why use the Zassenhaus formula and not...