清华微积分-1_Ch1习题
摘要：
U3-1 Here are some sets: (1) R both and (2) ∅ both and (3) (1,+∞) open set (4) [−1,0] closed set, -1 and 0 , which are not interior points, belong to 阅读全文
posted @ 2016-03-03 22:16 Yeh_Jianshi 阅读(158) 评论(0) 推荐(0) 编辑