2024高三下·全国·专题练习
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解题方法
1 . 已知函数
,若曲线
在
处的切线方程为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8290e8da6be8d6adc8131c6c4c6a2160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65bd2644fced5f81092a4c42a0d52741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
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2 . 设函数
,曲线
过
,且在P点处的切线斜率为2.
(1)求a,b的值;
(2)求该切线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba7a5db7869ea6e454a803d39731caf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9b5e076078240e0c5ad9763a9824d3.png)
(1)求a,b的值;
(2)求该切线方程.
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2024·全国·模拟预测
3 . 已知函数
的部分图象如图,则关于
的不等式
的解集是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc490102ca9a277c7d8efed0cad1e8bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba7418001cac9fa0d6c1432c0f3d6d9e.png)
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2024·全国·模拟预测
解题方法
4 . 已知函数
,且曲线
在点
处的切线方程为
(其中
为自然对数的底数).
(1)求实数
的值.
(2)当
时,证明:对
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616b485155f907f30240d0d060f6f662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04eed461026f69fe9ab2c5dc12af8ac7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be604061cf1591f7069472269d4c9719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3add1679c27392a1a7f635723a4b36eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dfb314e4d9f11480e56462feb9b1b59.png)
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2024·全国·模拟预测
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5 . 已知曲线
在点
处的切线与直线
垂直.
(1)求
的值.
(2)判断
的单调性,并求极值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54405db066ebf9631f4eac555bc91057.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea9824af71c9da5db5a00ec06063024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85bdbaee1c6d92b27ceac6e066cfce36.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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6 . 已知直线
与曲线
相切于点
,若
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e136e7637543c8ae92c8dcd55b31924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eae1b87c23b45ce5e5e74d5b1d73234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6945a1d7d30dd1b29577440dcfaac9a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5cb5655b5a98591d8726c5490a513bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 设函数
,
.曲线
在点
处的切线方程为
.
(1)求a的值;
(2)求证:方程
仅有一个实根;
(3)对任意
,有
,求正数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c927a4fcfc5c875001648ac315ae17c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31c4f39399ec245a67db2933ed639f2.png)
(1)求a的值;
(2)求证:方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0a73db674d29eae8f8921eff5944983.png)
(3)对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f44672d44c44a6bf67ec4243399b0e5.png)
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2024·全国·模拟预测
8 . 已知函数
,
.
(1)若曲线
在
处的切线
与直线
垂直,求
的方程;
(2)若
,求证:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/819a7ab25102cfb0ba49d9613e44a730.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1d32d1a5a0732c7e4af737555e44ff9.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef00713e73b8357cc7900144f5505bc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/526ce6f6edc0a79b5512f82a6d3ce8a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2429fa7b52e5bfc53e263bf5ce53b820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e2344eb48e815946ee03f1470acb90.png)
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9 . 已知
为正实数,构造函数
.若曲线
在点
处的切线方程为
.
(1)求
的值;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f9ca884f474b62457e84aa1bb771ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f20b6dc5145c6a31a12ae868f84fff0c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c692bc1b2475bb9064eee1ce4779cb80.png)
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10 . 已知函数
.
(1)若函数
有两个零点,求实数a的取值范围;
(2)已知
,
,
(其中
且
,
,
成等比数列)是曲线
上三个不同的点,判断直线AC与曲线
在点B处的切线能否平行?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cc1b193aa193153eb402df8560778e6.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0384a0466920e5bf00231a5c5bf77969.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c16dac1e9bf5804c8907cbc59014d04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
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