Question: Question 1 [4 marks]. Let x = (21, $2, . .., In). Recall that a function f(a) over R is a convex function if and

Question 1 [4 marks]. Let x = (21, $2, . .., In). Recall that a function f(a) over R" is a convex function if and only if, any pair of points x, y ( R" and A E [0, 1], f(Xx + (1 - X)y)

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