解题方法
1 . 已知函数
.
(1)若
,讨论函数
的单调性和极值情况;
(2)若
,求证:当
时,
;
(3)若
,求证:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b3de8a032a7081161352b34ee7bc59.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/933436a516df078f4c4250d698310c13.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5a81a39630f05d9a470c1f4b3c5e524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
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2 . 已知函数
.
(1)若
在
上单调递增,求实数
的取值范围.
(2)已知方程
有两个不相等的实数根
,且
.
①求
的取值范围;
②若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e058fc816e9935f358b1cb90433875d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)已知方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e44284cb19805a584880a686ac3df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192bebeaecf1729c55efad6e749a04e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae0a96799a6ffd8d340951b9db8da6d.png)
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名校
解题方法
3 . 已知函数
.
(1)若
,求
的极值;
(2)若
,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc582458f43ed2fdc0b8c51dcad1494.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f6d1efa04a6bc0ec188ced80b9a2cd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec54dae13eddc5299d30731e2a7d12d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2023-07-13更新
|
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3卷引用:辽宁省大连育明高级中学2023-2024学年高三下学期二模数学试题
4 . 已知函数
.
(1)若
求方程
的解集;
(2)若
有两个零点且有两个极值点,记两个极值点为
,
①求
的取值范围;
②证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad084d3bce1e2de2bf59a9a981fc9912.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8603ae7a8417d09605fa706e31d3dbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
②证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9694eaaa274ed8e3774a100aff5f101.png)
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5 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6fb4dde9ae9d5daa915814da1a946a9.png)
A.f(x)有一个零点 | B.f(x)在![]() |
C.f(x)有一个极值点 | D.若![]() ![]() |
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名校
6 . 已知
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60d8037441251037b0f4e3b5ac7ec2f5.png)
A.![]() ![]() |
B.存在实数![]() ![]() |
C.若![]() ![]() ![]() |
D.当![]() ![]() |
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名校
解题方法
7 . 已知函数
,下列选项正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13f16ecf00e593999e81a50906659f79.png)
A.![]() |
B.![]() |
C.若![]() ![]() ![]() |
D.设![]() ![]() ![]() |
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8 . 已知函数
.
(1)若
,求
的图象在
处的切线方程;
(2)若
有两个极值点
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb41724d9a030cc2694a58dee5387494.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b725fdc8de9800f2692f6fea8585b1e9.png)
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|
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名校
解题方法
9 . 已知正实数
,
,
满足
,则
,
,
的大小关系是( )
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99eb09ae12e252ec3367703bcbb535a9.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)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
10 . 已知函数
有三个零点,则实数m的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e04d7ac23ae566023f770d24ef06c2af.png)
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|
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