已知函数
在点
处的切线方程是
,其中
是自然对数的底数.
(1)求实数
的值;
(2)当
时,求函数
的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f8cd845c9e68780f5a5367a1693da7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6b6a11760d0724b0b60e55970e229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81041b4dd93923454a8f69da30d53249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62ff2912fd8d93b6e692936d95b727c5.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0166e7ec28cdd999101cad8aff7624c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
22-23高二上·云南楚雄·阶段练习 查看更多[3]
云南省楚雄市第一中学2022-2023学年高二年级上学期月考数学试题(已下线)5.3.2~5.3.3 极大值与极小值、最大值与最小值 (4)(已下线)第五章 一元函数的导数及其应用(A卷·知识通关练)(3)
更新时间:2022-10-27 22:05:40
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解题方法
【推荐1】
设函数f(x)=alnx﹣bx2(x>0).
(1)若函数f(x)在x=1处于直线
相切,求函数f(x)在
上的最大值;
(2)当b=0时,若不等式f(x)≥m+x对所有的a∈[1,
],x∈[1,e2]都成立,求实数m的取值范围.
设函数f(x)=alnx﹣bx2(x>0).
(1)若函数f(x)在x=1处于直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb70fdf064b9193e506ca43f4672af56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e2652edbf3e17c64f4164d561acf00a.png)
(2)当b=0时,若不等式f(x)≥m+x对所有的a∈[1,
![](https://img.xkw.com/dksih/QBM/2017/6/2/1700117170700288/1701852618088448/STEM/5fb5ac7ba9ba4eea96814b23a8a80481.png?resizew=13)
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【推荐2】已知函数
.
(1)若函数
在
处的切线斜率为2,试求a的值及此时的切线方程;
(2)若函数
在区间
(其中
…为自然对数的底数)上有唯一的零点,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db031fecc4539d8989308139842fcc4f.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d8914269ade8c15e97352a32de9aa9c.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/811c6fbc93bafee69ded75316ef05122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c07d7af2ede4abfa4d647b4058992d00.png)
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【推荐1】已知函数
满足
,且
在
上单调递增.
(1)求
的解析式;
(2)若
在区间
上的最小值为
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8aa2e1ca6bfb91742bc7aac3643e91a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f501f61e9ccacad7b3250a67200d9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29fad6ad2928c40df440831cc4a3fa99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0442422375b46ed9da57921893797f2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d13ce3ebd1112220c639562739f1f9d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
【推荐2】已知抛物线C:
上一点
关于动点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b62769b7177ef4bc952dc1dd51d6b510.png)
的对称点为
,过点
的直线
与抛物线
交于
,
两点,且
为
,
的中点.
(1)当直线
过坐标原点
时,求直线
的方程;
(2)求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f943121691740928470268b34781e06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b62769b7177ef4bc952dc1dd51d6b510.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbf46356c58fcd188901d6811575a5f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
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【推荐3】已知函数
,
.
(1)若
在
处与直线
相切,求出实数
、
的值以及
的单调区间;
(2)若
,是否存在实数
,当
时,不等式
有解?若存在,求出实数
的取值范围,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f24c338b454b9c9774cf2a48a38c1a8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdc6deca979f50c3310464cca848768a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92002afa0b414eae387a91207c629398.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc2d3df37e73a8abea815f37dbb3fff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4c78214e43a8b93f2a57072033cbcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eac2b31a19918895e5af2d316490e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78d36fbfe30342dda80716da57ec88b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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