CS 131 Random Art Assignment

1) Generating Random Expressions        
    Build function creates exprs                                      _ / 20
    Obeys bound on nesting depth                                      _ / 5
    Low probability of generating
      X or Y expressions too soon                                     _ / 5
    Documentation                                                     _ / 10

2) An Alternate Representation                                        _ / 30

3) Extensions                           
    Implementations: dexpr & fexpr                                    _ / 10
       (must return results in 
        [-1,1] given arguments in
        this same range,  at least one
	must take three subexpressions.)
    Creative Extensions                                               _ / 10
    Documentation                                                     _ / 10

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GRAND TOTAL                                                           _ / 100


General comments from the grader: