【考研类试卷】考研数学三(级数)模拟试卷2(无答案).doc

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1、考研数学三(级数)模拟试卷 2 及答案解析(总分:56.00,做题时间:90 分钟)一、选择题(总题数:7,分数:14.00)1.选择题下列每题给出的四个选项中,只有一个选项符合题目要求。(分数:2.00)_2.设 则( ) (分数:2.00)A.B.C.D.3.设 a n 0(n=1,2,)且 收敛,又 则级数 (分数:2.00)A.绝对收敛B.条件收敛C.发散D.敛散性与 k 有关4.设 收敛,则下列级数必收敛的是( ) (分数:2.00)A.B.C.D.5.下列说法正确的是( ) (分数:2.00)A.B.C.D.6.下列结论正确的是( ) (分数:2.00)A.B.C.D.7.设级数

2、都发散,则( ) (分数:2.00)A.B.C.D.二、填空题(总题数:4,分数:8.00)8. (分数:2.00)填空项 1:_9.级数 (分数:2.00)填空项 1:_10.设 (分数:2.00)填空项 1:_11.函数 (分数:2.00)填空项 1:_三、解答题(总题数:17,分数:34.00)12.解答题解答应写出文字说明、证明过程或演算步骤。_13.判断级数 (分数:2.00)_14.设级数 收敛,又 a n b n c n (n=1,2,)证明:级数 (分数:2.00)_15.设正项级数 收敛,证明 (分数:2.00)_16.设 为发散的正项级数,令 S n =a 1 +a 2 +

3、a n (n=1,2,)证明: (分数:2.00)_设 a 1 =1, (分数:4.00)(1).存在; (分数:2.00)_(2).级数 (分数:2.00)_17.设 u n 0(n=1,2,),S n =u 1 +u 2 +u n 证明: (分数:2.00)_18.若正项级数 与正项级数 都收敛,证明下列级数收敛: (分数:2.00)_19.判断级数 (分数:2.00)_20.设 为两个正项级数证明: (分数:2.00)_21.求幂级数 (分数:2.00)_22.求幂级数 (分数:2.00)_23.求幂级数 (分数:2.00)_24.求幂级数 (分数:2.00)_25.求幂级数 (分数:2.00)_26.求幂级数 (分数:2.00)_27.求幂级数 (分数:2.00)_

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