Question: L(y) {x e? : y} (2) Problem 3. Let f : R n + R be convex and Cl (R n ) (it is

L(y) {x e? : y} (2) Problem 3. Let f : R n + R be convex and Cl (R n ) (it is continuously differentiable). Consider the set: fl(x) {x' e Rn : - x) O} Fix a: Rn and let y f (x). Prove that L(y) C H (x). (3)

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