1 . 在用数学归纳法证明:当
>-1,
,
时求证
>
,由
时不等式成立,推证
的情形时,应该给
时不等式左边( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f0e9c04402a0ffdaa25c3e3c82c7dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcbba2be52dcec5ffd47ad680878f55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f8c6f6b225e8c8823c8b3c0c25577d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b796a70cdb0d3691dad665d844ebe65f.png)
![](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/8ef7ca2b3e8061384501f668e59696a1.png)
A.加![]() | B.减![]() | C.乘以![]() | D.除以![]() |
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2 . 已知函数
,记
,当
时,
.
(1)求证:
在
上为增函数;
(2)对于任意
,判断
在
上的单调性,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0bc4f7ba817dca32178b65d9aab5c67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9ab7bb40f58f28c9799b20f91d15d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57bdb7eaab39ffa580415a3f0a17ce26.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6ace630100e64ed290d82936ad249c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79fe3414b32bbd1190b41ed8307f905.png)
(2)对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea4ac187cbb465180e89f38250b3970.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61b4ceef651d43872a078d48092417d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79fe3414b32bbd1190b41ed8307f905.png)
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2019-10-15更新
|
294次组卷
|
6卷引用:江苏省南通市2018年高考数学模拟试题
江苏省南通市2018年高考数学模拟试题【市级联考】江苏省苏北四市2019届高三第一学期期末考试考前模拟数学试题(已下线)专题6.6 数学归纳法 (练)-浙江版《2020年高考一轮复习讲练测》(已下线)2019年12月11日《每日一题》一轮复习理数-数学归纳法(已下线)专题7.6 数学归纳法(练)-2021年新高考数学一轮复习讲练测(已下线)专题12 导数法巧解单调性问题-备战2022年高考数学一轮复习一网打尽之重点难点突破
3 . 在数列
中,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61fe23549697a06a4cb825b7cf8edf66.png)
(1) 求证:
;
(2)若
,求
的值,观察并猜想出数列已知数列
的通项公式
,并用数学归纳法证明你的猜想.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffa01f03fb074bff35b35e07047d11b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61fe23549697a06a4cb825b7cf8edf66.png)
(1) 求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c653177884385ae15b71438aac4e704d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ea8d0e50065114b05ef2dc1ea1129cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5b862c625e9afa23d5790b08dd3516d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
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2019-05-14更新
|
468次组卷
|
3卷引用:【全国百强校】甘肃省白银市会宁县第四中学2018-2019学年高二下学期期中考试数学试题
【全国百强校】甘肃省白银市会宁县第四中学2018-2019学年高二下学期期中考试数学试题河南省洛阳市2018-2019学年高二下学期期中考试数学试题(理)(已下线)考点57 推理与证明-备战2021年高考数学(理)一轮复习考点一遍过
4 . (1)是否存在实数
,使得等式![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e25b8d88409b68efef242840add57f8c.png)
对于一切正整数
都成立?若存在,求出
,
,
的值并给出证明;若不存在,请说明理由.
(2)求证:对任意的
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e25b8d88409b68efef242840add57f8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e24938aa90e9710a00d6c0f33d2c960a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](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/071a7e733d466949ac935b4b8ee8d183.png)
(2)求证:对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c95f6dd64f7d74782b9a1db30a7a871.png)
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5 .
已知
,
,如
,
,且
,求证:
;
用数学归纳法证明:当
时,
能被7整除.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a410340124e8eabdef461d5e106790fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2cba3674f8054bc804e88b8af4d3105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c80e2fc61d8422ffc7501e61ff2bc67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d0c77ff5970456053cbd625a6bf5e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dff5f2962942f237bd4814ca1fb7896a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d767209400ad0910dcb4e53e944f6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/559f6138fcea469489ef4399402f4b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dffa9bcd9e30100ea377320eb598585.png)
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名校
6 . (1)用数学归纳法证明:
;
(2)已知
,
,且
,求证:
和
中至少有一个小于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddc84a3551d9ff61fef65f06303a91d0.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69bbd0aae5a4f6129fc78f88f662f092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/165b2250624fc1f1551d6c38991487d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bb82093f9c1ec3ee4218ae8f8377644.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
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2019-04-16更新
|
758次组卷
|
4卷引用:安徽省亳州市第二中学2018-2019学年高二下学期第二次月考数学(理)试题
7 . 已知数列
:
N* ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f2c4700437fd789b457edc7a0a49aa.png)
(Ⅰ)归纳出an的公式,并证明你的结论; (Ⅱ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53646f3def8487b342f6b3daf5050f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f2c4700437fd789b457edc7a0a49aa.png)
(Ⅰ)归纳出an的公式,并证明你的结论; (Ⅱ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51a5feaeced57189fc87a4a54953db3c.png)
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8 . 已知函数f(x)满足:①对于任意实数x,y都有f(x+y)+1=f(x)+f(x)且f(
)=0;②当x>
时,f(x)<0.
(1)求证:f(x)=
+
f(2x);
(2)用数学归纳法证明:当x∈[
,
](n∈N*)时, f(x)≤1-
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff998d034284391ca064755fa6bf1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff998d034284391ca064755fa6bf1b.png)
(1)求证:f(x)=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff998d034284391ca064755fa6bf1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eff998d034284391ca064755fa6bf1b.png)
(2)用数学归纳法证明:当x∈[
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d30079376becb09d4550dcb7491434f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5f294032347d80dba06576e4f6c028f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5f294032347d80dba06576e4f6c028f.png)
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解题方法
9 . (1)当
时,求证:
;
(2)用数学归纳法证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03425cbe241074fd29fa5bb2b1da5820.png)
(2)用数学归纳法证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49a7eee6f97a8581ff245c581c672a9a.png)
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10 . 用数学归纳法证明:
求证:.
.
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