Thomahs 2020-10-10T00:15:51+00:00 被一道不等式难住了，眼瞅着头发掉光了，只能回娘家求助了[s:a2:哭]希望娘家人救救我，题目内容是当t≥3时求[img]https://img.nga.178.com/attachments/mon_202010/13/-7Q5-8z03K3ToS8r-1p.jpg.medium.jpg[/img]