Funktionsgraphen mit TikZ
Trying to simplify plotting functions with TikZ.
Defining the new command \graph. You can draw more than one functions in a coordinate system.
Werner Pronkow
Elements for LaTeX
Just a collection of the code I've found and use regularly in projects. Includes crazy shapes, graph paper, margin changes and alignment of equations.
Bon Crowder
Circular Keyboard
Circular Keyboard with Major Scales
Senan Sekhon