设函数
在
处取得极值
.
(1)设点
,求证:过点
的切线有且只有一条,并求出该切线方程;
(2)若过点
可作曲线
的三条切线,求
的取值范围;
(3)设曲线
在点
、
处的切线都过点
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5d8b3b1fd990585a1a84fd3cead9eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
(1)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87d6d46822b6a05d16ff51b5c503396f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2c84e7b41a841a230ed5f8a42309aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)设曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27c0ab3e2d7698f082854bafe4174dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4891e5e4e2130d7eb75de048004b120.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b2c84e7b41a841a230ed5f8a42309aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35103adfc8a0732d8f879add9b5e8cd3.png)
2023高三·全国·专题练习 查看更多[2]
更新时间:2023-05-01 20:17:06
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解答题-证明题
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较难
(0.4)
【推荐1】已知函数
,
,
.
(1)若
,求证:
;
(2)若函数
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存在两条公切线,求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/605e2f1014570bf34ea21c07c0d039e4.png)
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(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447d6f62c09c1d05346fd16a24159f6e.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解答题-问答题
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名校
【推荐2】已知函数
.
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(2)证明:
在区间
上有且仅有
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1465145d6bc8543d5c544dd99613970d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ff7cee2ddcb0fb2107f169cfa28e762.png)
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【推荐3】已知函数
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.
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(2)若经过点
可以作出曲线
的三条切线,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6223df81f9d3efbb8eac195704de9dd1.png)
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(1)求函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4569dd44eeb1f2ee56c930e609b6b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
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名校
【推荐1】已知函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解答题-问答题
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名校
【推荐2】已知
(1)若
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在
处的切线方程
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的极值和单调递增区间
(3)设
,求
在
上的零点个数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e070869893f728e8228034361e907dee.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0774e140a5ef1a14503a594db44fda1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fda04ff966756cac5df1771a8b92a7c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/840068c18e85d56b74f31fc8f7ad1a26.png)
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解答题-证明题
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(0.4)
【推荐1】设函数
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解题方法
【推荐2】已知函数
,
.
(1)当
时,求
的单调区间;
(2)若
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的极大值点,求实数
的取值范围.
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f385eacc118fe9b5f0c23182929d6a50.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb45f673c56a289ea78831c9237e8d20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐3】已知函数
有且仅有两个极值点
,
且
.
(1)求实数
的取值范围;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a206c7f0cc7ec00b30cf762191e7e272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/684bcf84f0a266515bfafde0da903050.png)
(1)求实数
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(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03ca13a93b5f401c0d39ba52b0cffcb0.png)
您最近一年使用:0次