As seen from the 2nd derivative, x^2*log(x) is concave for x <= .2231301601 and convex for x >= .2231301601. Therefore, it is neither convex nor concave, and can’t be used in CVX for minimization or maximization.
As seen from the 2nd derivative, x^2*log(x) is concave for x <= .2231301601 and convex for x >= .2231301601. Therefore, it is neither convex nor concave, and can’t be used in CVX for minimization or maximization.