Which of the following assertions for the convex function are incorrect?
选项:
A:If any level set of a function is convex then this function is a convex function
B:The sum of finitely many convex function is still a convex function
C:If the Hessian matrix of a function is positive semi-definite, then this function is a convex function
D:The Hessian matrix of strictly convex function is positive definite
发布时间:2024-05-21 13:46:19