Method __add__

recipes/Python/580610_Auto_differentiation/recipe-580610.py:74–75

(u, v)

        return inst

    def __add__(u, v):
        return Num(float(u) + float(v), d(u) + d(v))

    def __sub__(u, v):
        return Num(float(u) - float(v), d(u) - d(v))