Question: Add an artificial node and artificial arcs to prepare each of the following networks for twophase or big-M solution starting with a zero flow on

Add an artificial node and artificial arcs to prepare each of the following networks for twophase or big-M solution starting with a zero flow on all original arcs. Show the starting flow, and verify that it balances at the artificial node.

(a) The network of Exercise 10-1

(b) The network of Exercise 10-2

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