Question: 1. (5 points) Let G=(V,E) be a graph with source s and sinkt, and let f be a valid flow. Let AV be any set

1. (5 points) Let G=(V,E) be a graph with source s

1. (5 points) Let G=(V,E) be a graph with source s and sinkt, and let f be a valid flow. Let AV be any set not containing s or t. Prove that (u,v)EuA,v/Af((u,v))(u,v)EvA,u/Af((u,v))=0

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