Let f be the function defined by f(x) = 1 + x²/3 Consider the following properties: A. has local minimum at x = 0 B. concave down on (-∞, 0) U (0, ∞) Which does f have? 1. both of them 2. neither of them 3. A only 4. B only

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A: Since you have asked multiple question, we will solve the first question for you. If you want any…

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A: Given A=1,2,3,4B=a,b,c,d,e