真题
名校
1 . 请先阅读:
在等式
(
)的两边求导,得:
,由求导法则,得
,化简得等式:
.
(1)利用上题的想法(或其他方法),结合等式
(
,正整数
),证明:
.
(2)对于正整数
,求证:
(i)
; (ii)
; (iii)
.
在等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32eac4b7f177c041219fab18de973c5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc1e9d6c038e98eb3ced183bb6dcc53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d0035911136a83c7915137c3438e055.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92ba7e0c985c673fbb513b4a97d93746.png)
(1)利用上题的想法(或其他方法),结合等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9641914b1dcb9c0097550aebead97810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910adb8a80fceb7949c3526087947220.png)
(2)对于正整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bcfc48f9bc23cc43085bdb910e7a136.png)
(i)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba5c659f6e87ab7327ef8c3b3368ab23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbe3f70202a3b38d077fe431a6e63099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a002cedddac1e750b5e3f204974078.png)
您最近一年使用:0次
2016-11-30更新
|
2395次组卷
|
4卷引用:2008年普通高等学校招生全国统一考试数学试题(江苏卷)
名校
解题方法
2 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87500c37fe72a39bab426214083e0dbd.png)
.
(1)若
在
处有极值,问是否存在实数m,使得不等式
对任意
及
恒成立?若存在,求出m的取值范围;若不存在,请说明理由.
;
(2)若
,设
.
①求证:当
时,
;
②设
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87500c37fe72a39bab426214083e0dbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1466e5ee63d3c3b94e40b35fb879d5e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bab764788b299582009afd9fc613a59e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff71c87ed2ae102fbacedaac36ff2bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8326eccb6fccce4cad9ff889bf0febbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a6514519af132d4ae3c6aa03ed8c9f1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdab28f21cd89c17dfaebb3fdb701498.png)
①求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa3c2088213b0ee376d1c41a637eb0ec.png)
②设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4473e6a3eab1230911921fe2b5345e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5300e0c6410241ac66517c3e4b1cb55.png)
您最近一年使用:0次
2020-05-23更新
|
417次组卷
|
4卷引用:江西省宜春市奉新县第一中学2019-2020学年高二下学期第一次月考数学(理)试题
江西省宜春市奉新县第一中学2019-2020学年高二下学期第一次月考数学(理)试题宁夏回族自治区银川一中2023届高三二模数学(理)试题宁夏回族自治区银川一中2023届高三二模数学(理)试题(已下线)专题10 数列不等式的放缩问题 (练习)