已知函数
.
(1)当
时,求
在
处的切线方程;
(2)对于任意
,
恒成立,求
的取值范围;
(3)试讨论函数
的极值点的个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89c872fe8337ebee2271884685a633cc.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc447e38e268336b52e6f0a9b1a8bbd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b72121844b80009dd0d192cb08cc0aa8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d16b7e6997691bc5249bb7bc311952d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)试讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0190402154a41df5d95f13f9d1956dc.png)
更新时间:2020-04-23 22:43:15
|
相似题推荐
解答题-问答题
|
困难
(0.15)
名校
【推荐1】已知函数
.
(1)当
时,求
在
处的切线方程;
(2)若
在
上单调递增,求实数
的取值范围;
(3)若
存在极大值和极小值,且极大值小于极小值,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ade28792606e160fca00f675d711791c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.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/ed6d804ef44bfc64f824b0ccef71765e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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(0.15)
【推荐2】已知函数
.
(1)当
时,求函数
的单调区间;
(2)求证:直线
是曲线
的切线;
(3)写出
的一个值,使得函数
有三个不同零点(只需直接写出数值)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b73c89d14a4a01f4bae4ce619267e52f.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bac65e4153965d351c3d6ad587f2adcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a46b4e950b6fc1f7885ec992eab7b9ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
(3)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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【推荐3】设函数
.
(1)当
时,求函数
在点
处的切线方程;
(2)当
时,设
,且
轴,求
两点间的最短距离;
(3)若
时,函数
的图象恒在
的图象上方,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18ef4365413af15c45c7b018ddf69fb0.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e732291816c0f81ee182a45e7388aeca.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e0d1ca30e3c973fa59b4f5f5109cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d928238e1f1677f5f20ed62da87eb04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b1b15a4605fce993cb13aefbf40360.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f5a90aeba435af22d6bcdb7b91650b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5031e329aa639664c4671aaed4e07926.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
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解题方法
【推荐1】已知函数
,
(1)当
,
和
有相同的最小值,求
的值;
(2)若
有两个零点
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6c66c32cf0584b8990612638fa50dd0.png)
(1)当
![](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)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03b3d2315608819f8af9eeef4d3d90e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d4f313e85b97bda207222fa6e82b463.png)
您最近一年使用:0次
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(0.15)
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解题方法
【推荐2】已知函数
,
,
.
(1)讨论函数
在区间
上的最大值;
(2)确定k的所有可能取值,使得存在
,对任意的
,恒有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783aed04bc2c30d6835412ba4d2efe76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4306fb6d5419322b4b7b9140e06e43a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/597ea4818f3601c594669d4972bc59f8.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2b7c2420c387be8882df4359ac10b86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed2f490aac02631c2ed9e6b76354a49.png)
(2)确定k的所有可能取值,使得存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b874e45974ce6a77f78f561406d779.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17cbbe1d3f9f28909be9f91edb03c407.png)
您最近一年使用:0次
解答题-证明题
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困难
(0.15)
解题方法
【推荐3】已知
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0cdac8d1ae66c92f1852c70151310b.png)
(1)不等式
对任意
恒成立,求
的取值范围;
(2)当
有两个极值点
时,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef67f46ea50a21e16427d7792e1fa8fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a0cdac8d1ae66c92f1852c70151310b.png)
(1)不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fb40a36a293471742ce75f6b9635b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2272095103d72ab73f431c35b8fc305.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
名校
【推荐1】已知函数
,
,
.
(1)当
时,函数
有两个零点,求
的取值范围;
(2)当
时,不等式
有且仅有两个整数解,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11808753f25ab162ead0ea32a2f162f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79ab9014fe2981b669aa20fe26f63ad1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df49341b57eb107f416a014903ce25a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15d00e896ece0bec6845cdf25235bcbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05fce924911d5ed93147dfce9e41c2b0.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
|
困难
(0.15)
【推荐2】已知函数
.
(1)讨论函数
的单调性;
(2)已知
且关于x的方程
只有一个实数解,求t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd622e37fcd5b74cb160173d69c653e1.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fff6e7e2b9f2b68b1647f6350b98dc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca0768fdda38d69ccc506998ea6f9485.png)
您最近一年使用:0次