We implement the Computational Graph (CG) as Directed Graph The Graph of y = x1(x2+x3) looks like --- independent variables v1(x1): None v2(x2): None v3(x3): None --- function operations +4(v2.x + v3.x): [v2,v3] *5(v1.x * +4.x): [v1,+4] --- dependent vari
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