※ 引述《Evenroll (研二不是应该很清闲吗？)》之铭言：
: in the homework of this week,
: the second problem asks us to show that the primal and the dual problem have
: the same optimality condition.
: I am not sure what this hw means.
: Does it means that we should prove the KKT condition derive from
: the primal and the dual problem is the same?
yes.