真题
解题方法
1 . 已知数列
满足:
,且
.
(1)求数列
的通项公式;
(2)求证:对于一切正整数n,不等式
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40f4e1236d7dc0366d9523d0cbb426be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc571049e2b9b459a10c5e8cb3aba12.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)求证:对于一切正整数n,不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27dec6145263cd2fb7731bec5e0f5f5.png)
您最近一年使用:0次
2021-09-25更新
|
714次组卷
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3卷引用:高中数学解题兵法 第九十七讲 抛砖引玉
2 . 已知
的三边长
,三内角为
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f5573b30734d65648f61c0a94c98de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38335830b93ac4d99c28a8e209eecb3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b102b36cba4c1868afcd7a591a796da.png)
您最近一年使用:0次
名校
解题方法
3 . 设函数
.
(1)若
的解集为
,求实数
,
的值;
(2)当
,
时,若存在
,使得
成立的
的最大值为
,且实数
,
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6228f46a87a5a980ba45d304e90fe7e0.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abdaffa9c15517afe6d7ba6488f88f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dccf1f9faac56117d6d3dd1dddd286d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f07ad90ca228230b03f12eb48ee0c1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/128596b1fa47e37f7ddd307caf1f2be3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa8a716a31b0f51b70fdf9bdb257909.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37462b3ca360fb3aa151dbff9a57c91b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45919ba8b183e7d6f5fa017a24512b2b.png)
您最近一年使用:0次
2020-07-22更新
|
552次组卷
|
3卷引用:吉林省梅河口市第五中学2020届高三第七次模拟考试数学(文)试题
吉林省梅河口市第五中学2020届高三第七次模拟考试数学(文)试题吉林省通化市梅河口五中2020届高三高考数学(文科)七模试题(已下线)专题28 证明不等式的常见技巧-学会解题之高三数学万能解题模板【2022版】