How to express (x^2)*log(2+y) Nonconvex Nov 7, 2023 V Xiao Nov 7, 2023 #1 Hello, everyone ! Do you know how to express this function in CVX? (x^2)*log(2+y) Thank you very much! M Mark L. Stone Nov 7, 2023 #2 Presuming x and y are both optimization variables, (x^2)*log(2+y) is neither convex nor concave. Hence it can’t be used in CVX.