设函数
,其中
.
(1)若
,讨论
的单调性;
(2)若
,试证明
恰有两个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49aa5f48add0880006ac46f62286fd28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb5f421939ee855f25927e7570d82c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e9fdd2e38a61463831412e20f5e4184.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
2022高三·全国·专题练习 查看更多[3]
(已下线)专题20利用导数研究函数的零点(讲)(文科) 第一篇 热点、难点突破篇-《2022年高考文科数学二轮复习讲练测》(全国课标版)(已下线)专题20利用导数研究函数的零点(讲)(理科)第一篇 热点、难点突破篇-《2022年高考理科数学二轮复习讲练测》(全国课标版)广东仲元中学2024届高三上学期9月月考数学试题
更新时间:2022-01-09 20:14:57
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较难
(0.4)
【推荐1】已知函数
.
(1)当
时,求曲线
在点
处的切线方程;
(2)若
没有零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ae01109436ec5de989d9be9b4eb296.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)若
![](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
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较难
(0.4)
名校
【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93848931db33eeb42d3522f4d7260072.png)
(1)判断函数
的零点个数;
(2)证明:当
时,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93848931db33eeb42d3522f4d7260072.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cff7a7deafe061d63e324c12867f958.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/198eee97c7d4c6c56e8b163d4acc656d.png)
您最近一年使用:0次
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(0.4)
【推荐3】已知函数
.
(1)讨论函数
的单调性;
(2)证明:当
时,函数
有三个零点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6748b5f8cda24aafabb710773b6996bf.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9154514e9d2a5b3e3eaa508adabbaa5.png)
(2)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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较难
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【推荐1】已知函数
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且
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(1)讨论
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,
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.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b30766a1b8d38cef8a238253c7f6fb7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/757ef56103cabd93527c54db44151961.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8fb980d7eb8c309f07f7a66b948900b.png)
您最近一年使用:0次
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较难
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【推荐2】已知函数
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(1)当
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(2)讨论
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(3)若
,
,求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/664650a6b24edba52bea3b514f22019b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
(2)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96d99a8d49d2194044fcabeb0c8f9f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667988f732a9c9ef60af0855e2a35fdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次