用数列的极限证明lim3n-1⼀2n+1=3⼀2(n趋向无穷)

2025-06-22 15:05:51
推荐回答(1个)
回答1:

对任意ε>0 ,存在N=[2/ε] 当n>N 有
|3n-1/2n+1-3/2|=|6/4n+2|<|8/4n|<ε