Add plots to mathematical notes

[ishiikurisu]

I plan to complete the notes about signal processing and to eventually include notes about multivariable calculus at some point here. However, these require me to include some plots that are hard to draw. What is the best approach to include them?

[ishiikurisu]

Some plotting libraries:

• ReCharts
• TauCharts
• eCharts
• SVGBob (requires compiling the graphs before placing them on the document)