已知函数
,其中
.
(1)求曲线
在点
处切线的倾斜角;
(2)若函数
的极小值小于0,求实数
的取值范围;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb4b1e5b09959055c40229f10c6237a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0baedc4d7e690ab3f7d80d30ba0a9efe.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9770b18d9984172e6c08bf0921ec4200.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6aa7341d52b6d00ccbf30a1c6e1cb3b.png)
2024·山东·模拟预测 查看更多[4]
更新时间:2024-05-25 22:34:10
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相似题推荐
解答题-问答题
|
较难
(0.4)
名校
【推荐1】已知
.
(1)求
在点
处的切线方程;
(2)设曲线
上点的坐标为
,若曲线
在点
处的切线存在且倾斜角为
,求
的取值范围;
(3)若
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09d838e0f6de864fefaef4cff0ccd20.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed18eed72474eaba236f04fda1a73d4f.png)
(2)设曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b7741d1ff4020ae00aceb3e4d59c3d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52cc0e5d1117f190af5a38e720bff703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfed78b9669f146a29bb3bb6c650bdee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
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解题方法
【推荐2】已知函数
.
(1)当
时,求曲线
在点
处切线的倾斜角;
(2)当
时,函数
在区间
上的最小值为
,求
的取值范围;
(3)若对任意
、
,
,且
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77f2e7f68e5c896506126ecc189ddbc1.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7754cc9374c8193dadb6875fb8a3fefb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7493c0fcdc634aa03efb6be277e23769.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ef2289fca95d9bae47fb3d750663a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐3】已知函数
,且
.
(1)当
时,求
的单调区间;
(2)在函数上是否存在两点
,
,使得函数图象上在
处切线与
所在直线平行,若存在,求出
的坐标;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a727753aedc57264238ec4e532065db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cedde86fd5b5e93c14ffd9190fc7d7a1.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)在函数上是否存在两点
![](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/7ce482106356383d8c61c5a3bc1925eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.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)讨论
的单调性,并求其极值;
(2)当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a32e3a1fa4228c15bb163eaf6dfa98d.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cd3b569a11db7d5d10fdd9ad2051912.png)
您最近一年使用:0次
解答题-证明题
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较难
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【推荐2】设
函数
为
的导函数
(1)若曲线
与曲线
相切,求实数
的值;
(2)设函数
若
为函数
的极大值,且
①求
的值;
②求证:对于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2852552abb7df7f89a77582395170586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a8cf8fde6f7d4d3dd11294046a6d2e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a673c4b255a76a31893c53b4e8c3420b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa3c95c68a3be557c5c29eca5e63c12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2703c46e8359a0a895d042cc6d8699f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5790d5181783c15fd46d95bf18b796f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe23697a1a780374f4360afbf840db60.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
②求证:对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d059193d4c6ac0c5f440ac07fe5d45c.png)
您最近一年使用:0次
解答题-证明题
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较难
(0.4)
【推荐1】已知函数
.
(1)求证:
;
(2)若
对
恒成立,求
的最大值与
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e9661a155188f60607caa76bd062edb.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc9ede2e55724383dd1093fc7fcdb59.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/767c33f2006c59b838873a4464f26ac4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d36b7edbd8378708945cce0e9be48668.png)
![](https://img.xkw.com/dksih/QBM/2017/7/8/1732911327158272/1790719567519744/STEM/1aefbc81f87d44c9b8f77259efa2cdc1.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2017/7/8/1732911327158272/1790719567519744/STEM/0fde9a865f1b4c7887223426b638c99c.png?resizew=13)
您最近一年使用:0次
解答题-证明题
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较难
(0.4)
【推荐2】已知函数
,
,
,
.
(1)讨论
的单调性;
(2)若
存在最大值
,
存在最小值
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e84ceae1e0c6b86cf9f3349ae9057bf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea4ffd7a9c23a3b659194d5b263993d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f79b8690c922e042e422cda331fbdfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65cc39d12bb5794931b8bdcda3265ca.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6208895c0e3f31fcc437d2dfc5d18b9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fba00d1e252590c651fa39df7b00adf9.png)
您最近一年使用:0次
解答题-问答题
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较难
(0.4)
【推荐1】已知函数
,
.
(1)讨论
的单调性;
(2)若
存在两个极值点
、
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b67e1f2239cde87b2e22f1de8d6464df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce3a34d6f60032718820c3da2b07786b.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.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/d8c811d86769f6aef76dcd8c2a214a77.png)
您最近一年使用:0次
解答题-问答题
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较难
(0.4)
【推荐2】已知函数
,其中
,
为自然对数的底数.
(1)讨论
的单调性;
(2)当
时,求函数
在
上的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ef96ff936eb415b1f8fe6b9166d8e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c3e441923ed3c1a32720d6aeac2f599.png)
您最近一年使用:0次
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【推荐3】已知函数
.
(1)讨论函数
的单调性;
(2)若不等式
对任意
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3af2afd4ae747b3340b9354ce80d53.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f27ebb5a7c666dc60858fc08b33d4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次