[問題] 高微~~

[angrycute (哈)]

           ︵
1. Prove    n  (-1/n，1/n)= ｛0｝


2.
             n
Let Bn-An=1/2 ,An-1<An ,Bn+1<Bn

Find sup An  and  inf Bn.


拜託大家了~~~~



--
※ 發信站: 批踢踢實業坊(ptt.cc) 
◆ From: 218.170.45.192