This is a cheat sheet for writing mathematics with LaTeX. It is aimed at undergraduates.
When I asked my students for feedback on LaTeX the consensus was that it is pretty easy but they need a list of symbols. This is my response. Besides including all the symbols they should need, there is some general advice about writing mathematics in LaTeX and a few examples taken from their classes. It prints on two sides of a US letter sheet, so you could shove it in a book or a backpack and have it right there when you are writing.
You can get the PDF or a zip file of the source. You can also get the source at the GitLab repository.
This document is Free.
LaTeX Math for Undergrads by Jim Hefferon is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License. It is based on a work at http://joshua.smcvt.edu/undergradmath/undergradmath.zip.
You may be interested in my other Free materials, including my Linear Algebra text, my Theory of Computation text, and my Introduction to Proofs: an Inquiry-Based Approach text.