I handwrite them then type them. Use Pandoc; it basically abstracts all of the pain of LaTeX and allows you to write Markdown with equations. Writing macros is

I handwrite them then type them. Use Pandoc; it basically abstracts all of the pain of LaTeX and allows you to write Markdown with equations. Writing macros is also useful to save typing cramps and clarify meaning -- a typical example is \newcommand{\implies}{\Rightarrow}