數列an <= bn <= cn,<an>,<cn>均收斂且<bn>發散
數列an <= bn <= cn對所有自然數n都成立,<an>,<cn>均收斂且<bn>發散請問 有沒有例子說明這段話
謝謝 [quote]原帖由 [i]P78961118[/i] 於 2014-3-9 12:53 AM 發表 [url=https://math.pro/db/redirect.php?goto=findpost&pid=9651&ptid=1814][img]https://math.pro/db/images/common/back.gif[/img][/url]
數列an [/quote]
舉例:
<an>=<-2>={-2,-2,................,-2,...........}
<bn>=<(-1)^n>={-1,1,-1,1,...........,(-1)^n,..............}
<cn>=<2>={2,2,................,2,...........}
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