Question: 9. Let C be a closed convex set, and let f (:13) be the distance of a: to the set C: f(a:) = distance(a:,C) =

9. Let C be a closed convex set, and let f (:13) be the distance of a: to the set C: f(a:) = distance(a:,C) = min \"at: y||2 960 Show that f (m) is convex. Is f (:13) strictly convex? Why or why not

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