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解题方法
1 . 若正项数列
中,
,
,则
的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07c52ed7eee258a268b3185e850744d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039b4ea55b94b2fa10c9a3fd8a1d61ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce88126c3cbc88e03d38f56b7da315b6.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2 . 对于不等式
,某学生用数学归纳法的证明过程如下:
①当
时,
,不等式成立
②假设
,
时,不等式成立,即
,则
时,
,∴当
时;不等式成立.
关于上述证明过程的说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56651c7bb81b1237ae48b0717fac27fb.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fae4f95b1eb365c6e7c6737309e37dc.png)
②假设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef7ca2b3e8061384501f668e59696a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47c30f669ea79445ffe9392f4e8a16ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/485f243d9905a69022035e85bf8648ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ba21f3d0cfc86d40e2e06446623ce0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7b97365f145bace419e90d55726b733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ba21f3d0cfc86d40e2e06446623ce0.png)
关于上述证明过程的说法正确的是( )
A.证明过程全都正确 |
B.当![]() |
C.归纳假设正确 |
D.从![]() ![]() |
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解题方法
3 . 已知
,(其中
)
(1)求
;
(2)试比较
与
的大小,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b29ce6de90bef16414f97ccb40cf3b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9158db048850992ae4cace688253bf4c.png)
(2)试比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afda36d23dfe913fd1945b85663082ec.png)
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2021-09-01更新
|
61次组卷
|
2卷引用:江苏省扬州中学2020-2021学年高一(早培)下学期期中数学试题
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4 . 设
.
(1)比较
和
的大小,直接写出结论,不必证明;
当 时,
;
当 时,
;
当 时,
;
(2)比较
和
的大小,其中e是自然对数的底数,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1933b7c3ace69622339353431c519b13.png)
(1)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f31971306914638e5ceb1bbe437535d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceef1abeeef220b4fe5f7d96feedd90.png)
当 时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/391e01d7d24afa9313a7cc93a1ea39c1.png)
当 时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72c3297978bf9e95203e7385e3cf9db1.png)
当 时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/549199e4263eea97d84f00e15f1aad5b.png)
(2)比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4e26a648030b46c5199d1541b438f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceef1abeeef220b4fe5f7d96feedd90.png)
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5 . 正项数列
满足
.
(1)求
;
(2)猜想数列
的通项公式,并给予证明;
(3)若
,求证:
是无理数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/624f10fb877734018a18b280e4efa7ba.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe61d313eeca8ba47478a9de40540db8.png)
(2)猜想数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ccfa38896c6ac193fbab372f963dbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59e7c7a84a4bdb959e95536d0404ceb.png)
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6 . 在数学归纳法的递推性证明中,由假设
时成立推导
时成立时,
增加的项数是_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef7ca2b3e8061384501f668e59696a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ba21f3d0cfc86d40e2e06446623ce0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/216c0cde1f24ac58c14959d674a62ee0.png)
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2020-03-30更新
|
360次组卷
|
4卷引用:【全国百强校】江苏省扬州中学2018-2019学年高二下学期期中考试(理) 数学试题
【全国百强校】江苏省扬州中学2018-2019学年高二下学期期中考试(理) 数学试题江苏省扬州市邗江区2018-2019学年高二下学期期中数学(理)试题(已下线)2.3 数学归纳法-2020-2021学年高二数学(理)十分钟同步课堂专练(人教A版选修2-2)江西省抚州市金溪县第一中学2021-2022学年高二下学期第二次月考数学(理)试题
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7 . 已知数列
满足:
,
,
.
(1)化简:
(结果用
表示).
(2)求证:
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5bc50d3e9cacfaff721090ee725ce19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
(1)化简:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/169f26144c7416f654dd1b6952b7573d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47c14f644b116359a48b09c0b053ed5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
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10-11高二·江苏·期中
8 . 已知数列
满足
,且
.
(1)求
,
,
;
(2)由(1)猜想
的通项公式
;
(3)用数学归纳法证明(2)的结果.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1072b52c1d72b5d383cdaeb24fa2b102.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
(2)由(1)猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(3)用数学归纳法证明(2)的结果.
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2022-03-01更新
|
638次组卷
|
4卷引用:2010-2011学年江苏省溱潼中学高二年级期中数学(理)试卷(一)
(已下线)2010-2011学年江苏省溱潼中学高二年级期中数学(理)试卷(一)江苏省连云港市锦屏高级中学2017-2018学年高二下学期期中数学(理)试题(已下线)4.4 数学归纳法2苏教版(2019)选择性必修第一册课本习题 习题4.4
9 . 已知数列
是等差数列,且
,
,
是
展开式的前三项的系数.
(1)求
的值;
(2)求
展开式的中间项;
(3)当
时,用数学归纳法证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c5fac3af6460e94b3dba9f184384244.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c0e59b0b95ee74af1982d33586e69ed.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d3dbd47264c325a7119ff05e42c1620.png)
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10 . 已知数列
和
,其中
,当
时,试比较
与
的大小,并用数学归纳法证明你的结论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f1ce1d77a0a00432fccf2a0b3b85dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea0dab63dac92bedf9fd37c3e80c076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/686ece75006ad358f23314dc8a246e11.png)
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