名校
解题方法
1 . 已知数列
满足
,
,
,
成等差数列.
(1)求证:数列
是等比数列,并求出
的通项公式;
(2)记
的前n项和为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2438f2272d7b7ab51dbbe587025a553d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/479c0564241789f8f52ac4fda26e9904.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6197e2365d7f39507f8671acfc25a339.png)
(1)求证:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213e22890204937a5dded4436369390f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)记
![](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/ef130855c8dc1accbff28762858f20bf.png)
您最近一年使用:0次
2024-06-09更新
|
553次组卷
|
2卷引用:河南省信阳市新县高级中学2024届高三数学考前仿真冲刺卷
2 . 已知函数
.
(1)若
时,
,求实数
的取值范围;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e479a70a6b47a275dfb0bbac1dcc1cf2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f0f32f60a5f8d6e89ca3ad3b1d563d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/534a35d612fd08ebbd3f6078572b3d77.png)
您最近一年使用:0次
3 . 已知
,
,
都是正实数.
(1)若
,求
的最小值;
(2)若
,且
,求证:
.
![](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)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ff948167adef1b0dcf59a7aaec40110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bafa8d972ced9eecf153f7bf64235a57.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce613eaa5df46a50174085ef5d1087fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce83158de5c550cdfa53f86dd06a7bc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05f091af7ae3f34c240b509c964d7d50.png)
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2021-05-08更新
|
380次组卷
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3卷引用:河南省洛阳市2021届高三三模数学(理)试题
解题方法
4 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301081681323c1057a340efd67748d34.png)
(1)证明:
;
(2)设
为整数,且对于任意正整数
,
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301081681323c1057a340efd67748d34.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67cc29a9d6c3e3a85a6da80fc4a611fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2020-03-25更新
|
716次组卷
|
6卷引用:2020届河南省开封市高三3月模拟考试数学(文)试题
2020届河南省开封市高三3月模拟考试数学(文)试题2020届河南省开封市高三3月模拟考试数学(理)试题(已下线)专题03 导数及其应用-2020年高三数学(文)3-4月模拟试题汇编(已下线)专题02 导数(文)第三篇-备战2020高考数学黄金30题系列之压轴题(新课标版)(已下线)必刷卷02-2021年高考数学(文)考前信息必刷卷(新课标卷)(已下线)专题02 导数(理)第三篇-备战2020高考数学黄金30题系列之压轴题(新课标版)
5 . 已知函数
.
(1)求
的最小值;
(2)设m为整数,且对于任意正整数n,
,求m的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75c0b471c9a4ff941c65b0dc3b7605b7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设m为整数,且对于任意正整数n,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c860525569ef7df6d9a67d61bf3b8ce0.png)
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2020-01-11更新
|
462次组卷
|
2卷引用:河南省洛阳市2021届高三二模数学(文)试题
6 . 选修4-5:不等式选讲
已知函数
.
(Ⅰ)若
,求不等式
的解集;
(Ⅱ)若
,求
的最小值.
已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1943fb786e112dd548f582fe9e02a18.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2d3df37e73a8abea815f37dbb3fff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73808266e0ab78996165a30a39f6c11f.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac3649308b528fd56545ba102dc42d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
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