Further learning
The previous chapters offered quick-start recipes, but in-depth reference manuals for mathematics with LaTeX exist. The amsmath manual is one such comprehensive resource, detailing the package extensively. Access it by typing texdoc amsmath at the command prompt or online via https://texdoc.net/pkg/amsmath.
For an even more comprehensive document, visit https://ctan.org/pkg/voss-mathmode.
We used TikZ a lot to visualize mathematics. The manual is available by typing texdoc tikz at the command prompt and at https://texdoc.org/pkg/tikz.
There’s a section in the TikZ example gallery with many example math drawings with complete code at https://texample.net/tikz/examples/area/mathematics.
Even more examples are at https://tikz.net/category/mathematics.
There’s a gallery for two-dimensional and three-dimensional plots with extensive math at https://pgfplots.net/tikz/examples/area/mathematics. I maintain the mentioned websites. If you have questions...