解题方法
1 . 已知正实数
,
满足
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/854c7f3b0b8661beceac1cb4d657c702.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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|
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2 . 已知函数
.
(1)若
,求
的单调区间;
(2)若
恒成立,求
的取值集合.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0aefefa22770c10304803252d376532.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2024-06-06更新
|
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2卷引用:贵州省部分学校2024届高三下学期联考数学试卷
名校
解题方法
3 . 英国数学家泰勒(B.Taylor,1685—1731)发现了:当函数
在定义域内n阶可导,则有如下公式:
以上公式称为函数
的泰勒展开式,简称为泰勒公式.其中,
,
表示
的n阶导数,即
连续求n次导数.根据以上信息,并结合高中所学的数学知识,解决如下问题:
(1)写出
的泰勒展开式(至少有5项);
(2)设
,若
是
的极小值点,求实数a的取值范围;
(3)若
,k为正整数,求k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ba62322394a513a9e60536e424f112.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b80c875ad8fafc41d5c82baf23bb5e4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd370c3b127fbdb77b6e5c40318328d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad040ae0fab73f5dd7b1af48cd3b5f93.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a923c6ef8e8a289acf935ca73c92a28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf90a3d768f2a8ff0ede2f973d1dad1.png)
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4 . 已知函数
和
.
(1)若函数
在点
处的切线与直线
垂直,求
的单调区间和极值;
(2)当
时,证明:
的图象恒在
的图象的下方.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf88f7ec79fc9e89f1806e1d027d69a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1610bcd07b02c4ed7184ad586b88f373.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9e493a2a0d0c1c4cd3c334454419d42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/561800aa679a45da4dbe0e323de1fd59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
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解题方法
5 . (1)证明:当
时,
;
(2)已知函数
在
上有两个极值点,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44658a47cc113e8fe2caf29eb4d95f96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a35e5060c242f7d8eeba3b2ef21504d9.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28e92437ad44dc24c75ff808348a0983.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f385eacc118fe9b5f0c23182929d6a50.png)
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名校
6 . 已知函数
在
处的切线为
轴.
(1)求实数
的值;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da6a5d7726fe6c16df9f230cc4954f59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec72ca557aa4229ee871628ffcf0d8a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78f7b93cc1e59257a15b904ca84983a.png)
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解题方法
7 . 已知函数
.
(1)判断
的单调性;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7950145505c2334df22eeeddfc00bf01.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b863d457cb7d3424ea9a26d345a5ad3c.png)
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解题方法
8 . 已知函数
的导函数为
,
与
的定义域都是R,且满足
,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090a91e4f3c8930674f98a9fa527709b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090a91e4f3c8930674f98a9fa527709b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad9fa37708b2b61c3347690126ab318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fbc5e7b5620cafbde3f4b18f6843a42.png)
A.![]() ![]() | B.![]() |
C.![]() | D.![]() |
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9 . 已知函数
.
(1)当
时.求
在
处的切线方程;
(2)若方程
存两个不等的实数根,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59ad477261f1bc0806f0576e237c6fb4.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36304ea6666a32973641e4794c285297.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
10 . 已知函数
,若方程
存在三个不相等的实根,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e492cb7c1567b9ce398e128d01ac85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c81e906108b74b275d0d754d523662f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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