Formula plotting-cartoons

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A cartoon is a feature useful for visualizing transformations of objects. Two primary uses of cartoons that I can see are:

  • demonstrating simplification of formulas
  • demonstrating movement of objects

Both ways of using cartoons are supported.

A cartoon is defined with a pseudo-function call cartoon(), and a list of arguments. Each argument specifies an individual frame of the cartoon. A frame can be either a regular formula or a diagram or a graph. Example:

 cartoon( 
   (x^2-1)/(x+1), 
   (x-1)*(x+1)/(x+1),
   x-1
 )