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题型:解答题 题类:常考题 难易度:困难
2016-2017学年浙江省湖州市高二下学期期中数学试卷
(Ⅰ)求证:an+1<an;
(Ⅱ)求证: ≤an≤ .
(Ⅰ)0<xn+1<xn;
(Ⅱ)2xn+1﹣xn≤ ;
(Ⅲ) ≤xn≤ .
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