How to express x/(1+exp(-y)) Nonconvex May 20, 2021 J jiahuaiqi May 20, 2021 #1 variable x, y how to express x/(1+exp(-y)) in the CVX. Thanks! M Mark L. Stone May 20, 2021 #2 This is neither convex nor concave. So it can’t be used in CVX.
