[考研类试卷]考研数学三(微积分)模拟试卷30(无答案).doc

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1、考研数学三(微积分)模拟试卷 30(无答案)一、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。1 若正项级数 ( )(A)发散(B)条件收敛(C)绝对收敛(D)敛散性不确定2 设级数 ( )(A)发散(B)收敛于 (C)收敛于 0(D)敛散性不确定3 级数 (a0)( )(A)发散(B)条件收敛(C)绝对收敛(D)收敛性与 a 有关4 若级数 收敛(u n0),则下列结论正确的是( )5 设 收敛,则下列正确的是( )6 设常数 k0,则级数 ( )(A)发散(B)绝对收敛(C)条件收敛(D)敛散性与 k 有关7 设 ,则( )8 设 an0(n=1,2,)且( )(A)绝对收敛(

2、B)条件收敛(C)发散(D)敛散性与 k 有关9 设 收敛,则下列级数必收敛的是( )二、填空题10 设11 级数 的收敛域为_,和函数为_12 设 ,则 f(n)(0)=_13 函数 展开成 x 的幂级数为_三、解答题解答应写出文字说明、证明过程或演算步骤。14 判别级数 的敛散性,若收敛求其和15 16 判断级数 的敛散性17 判断级数 的敛散性18 判断级数 的敛散性19 判断级数 的敛散性20 判断级数 的敛散性21 判断级数 的敛散性22 判断级数 的敛散性23 判断级数 的敛散性24 判断级数 的敛散性25 判断级数 的敛散性26 判断级数 的敛散性,若收敛是绝对收敛还是条件收敛27 判断级数 的敛散性,若收敛是绝对收敛还是条件收敛?28 设级数 收敛29 设正项级数收敛,说明反之不成立30 设 为发散的正项级数,令 Sn=a1+a2+an(a=1,2,)证明:收敛31 32 设 un0(n=1,2,), Sn=u1+u2+un证明: 收敛33 34 判断级数 的敛散性,若级数收敛,判断其是绝对收敛还是条件收敛

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