名校
解题方法
1 . 已知数列
中,
,
.
(1)求
,
,
的值;
(2)猜想数列
的通项公式,并用数学归纳法证明;
(3)求证:数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b13a6e1d671215fc96e4bee3541d1096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94c5cb333bc3e0589ed52d997a203904.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)猜想数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba57c83d526ac308d1461e80fcca9f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa33d6f116c61ab89224c1a9886861cd.png)
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2020-03-05更新
|
377次组卷
|
2卷引用:四川省成都市第七中学2018-2019学年高二下学期期中考试数学(理)试题
名校
解题方法
2 . 已知数列
满足:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48cc58a41a70d37e4ead15a9fdfd8953.png)
(1)求:
,
(2)猜想数列
的通项公式,并用数学归纳法证明;
(3)若
且
对于
恒成立,求实数
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6dcba920904a03e3f950e962cc8c7ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48cc58a41a70d37e4ead15a9fdfd8953.png)
(1)求:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a447e5baee4f7518706498d4aca7553b.png)
(2)猜想数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b7e7cd571c8cd141cbbfe5d0890bf6.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/446da93de58380bd808755dc20163b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3458e228949da4c92f5b8cd0173ba7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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名校
解题方法
3 . 某林场现有木材存量为
,每年以25%的增长率逐年递增,但每年年底要砍伐的木材量为
,经过
年后林场木材存有量为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(1)求
的解析式
(2)为保护生态环境,防止水土流失,该地区每年的森林木材存量不应少于
,如果
,那么该地区会发生水土流失吗?若会,要经过几年?(取
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b35626d9a34931442cc6e4297cafb47.png)
(2)为保护生态环境,防止水土流失,该地区每年的森林木材存量不应少于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e82eb834864b812786d0cceb458f91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c4d952f138f0bcf253bc667fef7ce0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49f8340ff8ef6994abddab919418423b.png)
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2020-03-02更新
|
464次组卷
|
3卷引用:上海市上海外国语大学附属上外高中2019-2020学年高二上学期期中数学试题
上海市上海外国语大学附属上外高中2019-2020学年高二上学期期中数学试题江西省安福中学2019-2020学年高一(普通班)下学期线上考试数学试题(已下线)专题06 函数建模问题(第六篇)-备战2020年高考数学大题精做之解答题题型全覆盖
名校
4 . 用数学归纳法证明
的过程中,由
到
,不等式的左边增加的项为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/208bbab86ca397696053506d066100a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef7ca2b3e8061384501f668e59696a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ba21f3d0cfc86d40e2e06446623ce0.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 已知数列
满足:
,
,其中
,数列
满足:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b89dee6581c20e3a45ae3ad664cfc4d.png)
(1)当
时,求
的值;
(2)证明:
对任意
均成立,并求数列
的通项公式;
(3)是否存在正数
,使得数列
的每一项均为整数,如果不存在,说明理由,如果存在,求出所有的
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88285bcde29db874f4618af9cae56939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f56a87b3ba4663d6cae22f9fe851dc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b89dee6581c20e3a45ae3ad664cfc4d.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cf8ae8e4583f0c2c15f2b34b7078bf2.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f9beb741b90ae065614bb68ba60dbca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
(3)是否存在正数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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6 . 已知
,记
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20c276853b28aaa4db3b4ea8479de7b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd285b3b1e8c62454f0cc321cb80ceea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac47bb7ca73c1852b3acb16c5f21c73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7b2a80b41ffdb9089018e2b9654a858.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
7 . 若用数学归纳法证明等式
,则
时的等式左端应在
的基础上加上( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/470605dc68db07c27b36c17f87493fe0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ba21f3d0cfc86d40e2e06446623ce0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef7ca2b3e8061384501f668e59696a1.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
解题方法
8 . 设数列
的前n项和为
,对一切
,点
都在函数
的图象上.
(1)求
,
,
的值.
(2)猜想
的表达式,并用数学归纳法证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28652e52c0b02a343e618935ea625cbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96e6e0e0522300b27c59ea1920a7b725.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c57f5406c33778c7008edbb0981b3f98.png)
(1)求
![](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)
(2)猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
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名校
9 . 用数学归纳法说明:
,在第二步证明从
到
成立时,左边增加的项数是________ 项.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3a83836cbc0792a9158dbe457378cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef7ca2b3e8061384501f668e59696a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ba21f3d0cfc86d40e2e06446623ce0.png)
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2020-02-27更新
|
154次组卷
|
2卷引用:天津市耀华中学2017-2018学年高二下学期期中考试数学试题
10 . 已知
.用数学归纳法证明
,请补全证明过程:(1)当
时,
;(2)假设
时命题成立,即
,则当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5654b1ff5304be749e5e9d2ca430251b.png)
______
,即当
时,命题成立.综上所述,对任意
,都有
成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d0327c94eb3f2598463855331efd863.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cfc470fed690793d4909a5cfe4009e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c87b351f16728b0023fd63678f8103c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5424c6512ca088e831376827f9076197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef7ca2b3e8061384501f668e59696a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d853673eda54d6bc06e912b696e03b76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ba21f3d0cfc86d40e2e06446623ce0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5654b1ff5304be749e5e9d2ca430251b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94254e445240fc841982c4ad57dee344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63ba21f3d0cfc86d40e2e06446623ce0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e145b6046bc80d0ffecc61ac67c87ca1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cfc470fed690793d4909a5cfe4009e3.png)
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