Question: Consider the Z*() function shown in Fig. 8.2 for parametric linear programming with systematic changes in the bi parameters. (a) Explain why this function is

Consider the Z*(θ) function shown in Fig. 8.2 for parametric linear programming with systematic changes in the bi parameters.
(a) Explain why this function is piecewise linear.
(b) Show that this function must be concave.

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