已知函数
,
.
(1)若曲线
与
在公共点
处有相同的切线,求实数
,
的值;
(2)若
,
,且曲线
与
总存在公共的切线,求正数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0649eac6b5d3ebed30fd4dd2a5e1680a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70c5a04621a392f46f7ee45a85012bde.png)
(1)若曲线
![](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/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](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)
17-18高二上·辽宁·期末 查看更多[4]
辽宁省实验中学、大连八中、大连二十四中、鞍山一中、东北育才学校2017-2018学年高二上学期期末考试数学(文)试题福建省闽侯县第八中学2017-2018学年高二上学期期末考试数学(文)试题【全国百强校】四川省雅安中学2019届高三上学期第一次月考数学(文)试题(已下线)思想03 运用函数与方程的思想方法解题(4大题型)(练习)
更新时间:2018-01-21 15:08:48
|
相似题推荐
解答题-问答题
|
较难
(0.4)
名校
【推荐1】已知函数
,
.
(1)当
时,求曲线
与
的公切线的方程;
(2)若
有两个极值点
和
,且
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34adc4e1815352b09897904b586e14c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/798d14bc50856d14997651d47c01efe0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b7c2420c387be8882df4359ac10b86.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/6e1ace83c0a47032af4d93dfdea56b10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐2】设函数
.
(Ⅰ)讨论
的极值;
(Ⅱ)若曲线
和曲线
在点
处有相同的切线,且当
时,
,求
的取值范围 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/430dacd89998b7af22e2eecc97ceeab3.png)
(Ⅰ)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(Ⅱ)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c10f14aae6fb21e047ecb39cdf40c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1e123a2b615be0baeef83bd218bce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d8fc73b8f2c06f1ea23dca982c1642.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解答题
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【推荐3】已知函数
.
(1)当
时,求函数
的单调区间;
(2)设函数
的图象在点
两处的切线分别为
,若
,且
,求实数c的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e136f28a98a4ffba1f56670edcac621.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cf38aae494f5762ef54fb5f721e4cc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b672f564d03ed46d092bb130f229ad8.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b672f564d03ed46d092bb130f229ad8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0317cdfe36e8d138d832b30b8c5e0b0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac491b64a4d0a2ad0b44296f94217d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce08b357f11ef44c3e8207ac574422a.png)
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解答题-问答题
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较难
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解题方法
【推荐1】已知函数
.
(1)当
时,讨论
的极值点个数;
(2)若
时,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b0804aa360db4372b22d6bce8ccdbde.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a380067a20c25338eb0312e8df6c2760.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adba8d0ef50f01c1afc0a6118b1a9566.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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较难
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【推荐2】已知函数
,
.
(1)设
,
分别为
,
的导函数,试讨论
根的个数;
(2)若
,当
时,
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b42713169487cfde4d098249e04acd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdef85d50578d84a92ffcc754f7afddb.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22add663bd26e87d972a10dc5fd9ada1.png)
![](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/d12f0d6410b148a638ab632af5de5608.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b624d88827e92e12bc0a8f1067cbe72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1e123a2b615be0baeef83bd218bce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8f46de19a7ea6e1a5c410f5ba5d8b20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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(0.4)
【推荐3】设函数
,其中
,曲线
在
处的切线方程为
.
(1)求函数
的解析式;
(2)若
的图像恒在
图像的上方,求m的取值范围;
(3)讨论关于x的方程
根的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/204bebc36e4903265980e8c2d14f19b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ec89bb290fe3ec4ab5c796f82f00941.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9a9b769d70cb6f29e965c800921c8ea.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
(3)讨论关于x的方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f8bfb563f79688d136e0cb958b5153c.png)
您最近一年使用:0次