Question: Prove if the optimization problem below is concave or convex: minimise subject to 1/x + 2/x2 + 1 x 1 max { X1 + X2,

Prove if the optimization problem below is concave or convex:

Prove if the optimization problem below is

minimise subject to 1/x + 2/x2 + 1 x 1 max { X1 + X2, X, - X3}>= 2 X1, X2 >= 0, X, unrestricted

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