# vim: set fileencoding=utf-8 :
 - Last possibilities reduce to a similar result.

 - ExpressionNode.equals() werkend maken voor alle cases (negatie).

 - Create unit tests for node inequivalence operator.

 - Line printer: 1 / (n + n)x  ->  1 / (n + n) * x

 - Modules:
   + Equations with substitution
   + Gonio, no matches for sin(pi), sin(2pi), sin(4pi), etc...

 - Add parentheses to integral bounds where needed:
   int_(-1)^2 ... dx
   or, fix parser error using the following notation:
   int_-1^2 ... dx

- Fix: int -cf(x) dx (caused infinite loop)
  Solution: remove baby steps that rewrites f(x) to f(x) ^ 1

- Add backslash notation for special LaTeX symbols notation such as \pi?