Question: Suppose L = 2, X = (-oo,00) x Ry, _ is represented by the utility function u(x) = x1 + In(1 + 2). Show that

Suppose L = 2, X = (-oo,00) x Ry, _ is represented by the utility function u(x) = x1 + In(1 + 2). Show that it is quasilinear. Is it convex? Strictly convex? Homothetic? Could you please show the proof of convexity? Thank you so much

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