已知曲线
在点
处的切线方程为
.
(1)求a,b的值;
(2)求
的单调区间;
(3)已知
,且
,证明:对任意的
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a274b0623171972513340511781ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f2e4560759a110e4ccc334e3ccea7e4.png)
(1)求a,b的值;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b9c008f8fcc8edcd68fb14e0727fa49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bccf433ec08ad06d0e8a7eb53f5143ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/734a6de235c7c5205eb3d81109f04abf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e176b379350d3bbdbb923c2e8435f011.png)
2024·江西·模拟预测 查看更多[2]
更新时间:2024-05-31 19:24:25
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相似题推荐
解答题-证明题
|
困难
(0.15)
名校
【推荐1】设函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a6650f77a45f5f5e99d6755727c15c.png)
(1)当
时,求函数
的单调区间;
(2)令
其图象上任意一点
处切线的斜率
恒成立,求实数
的取值范围;
(3)当
时,令
若
与
的图象有两个交点
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a6650f77a45f5f5e99d6755727c15c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa3dc4e22ccb7a22bc255aa53a4881b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c792fd90ffdee2b8fd0a39b075a356c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caf0d139c9810361b4971904a943856b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0abda5d267c0aa2e8a5857dbf006a8c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657435e1fda84118e7f63c97505c8b75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6e62031d8b97b0a8d712eca7ccfff5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5790d5181783c15fd46d95bf18b796f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92860378096f519a8fb276d07dbfabce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4daf40bad1cc89311930cce356672354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08cf1d9986814081600cee9a19a24860.png)
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【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ddbc1b0656c877ca2b0e64179ad81a9.png)
(Ⅰ)若
在
处的切线与直线
垂直,求实数
的值;
(Ⅱ)当
时,求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ddbc1b0656c877ca2b0e64179ad81a9.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db40d5295942e85ec07a3728c7ad308d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2600a54b7bf3f79aaec7d49a47f6b4d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e496dc92bf937801cca1cb9bf2e1038e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0930435da69cc8acb790f4b3543ffea6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4252b061a3221455429b0639b30feb01.png)
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(0.15)
解题方法
【推荐3】已知函数
,
.
(1)若直线
是函数
的图象的切线,求实数
的值;
(2)当
时,证明:对于任意的
,不等式
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4148eb89c1d500c7de387547772f888.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1495821fad209346487928e0429f742.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6e15daf7b14dbff32c390f4984dcfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa204d6b5183969f6da37f369eb7293d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868ee58bffacef0b08d55d53dbe6f8f8.png)
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解答题-问答题
|
困难
(0.15)
真题
名校
【推荐1】已知
,函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd96607c9d7d6df245eac03d506cddf2.png)
(Ⅰ)若
,求曲线
在点
处的切线方程.
(Ⅱ)若
,求
在闭区间
上的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da989240786ef7c3e2d903f30caf59e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd96607c9d7d6df245eac03d506cddf2.png)
(Ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150e8e4ca6aa729a72a6a17c36b8ebfe.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e54731e765afe13365b63e525780bb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18c16fc9efe77598af05791515f91a09.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
名校
【推荐2】已知函数
.
(1)若
,求
的单调区间;
(2)是否存在实数a,使
对
恒成立,若存在,求出a的值或取值范围;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/474bbf112d8ad487e28708f5fb3c9897.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ffecb03c47be920254c4ccffa5b222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)是否存在实数a,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81ed7f6a4475e0fa682fa81ee747da3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.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
(
为常数).
(1)讨论函数
的单调区间;
(2)当
时,设
的两个极值点
,
(
)恰为
的零点,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7980111edee3c8fc65222950c4691e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884e8f81bb2777bfd2cf1b67b4c52cd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e156bd36aef172cb4e6360638aac4de6.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/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e587861eee5be3694f3971dca7ed29ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a691443f529bd64aa9b9ccefe1b59a0c.png)
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【推荐1】已知椭圆
的两个焦点为
,动点P在椭圆上,且使得
的点P恰有两个,动点P到焦点的
的距离的最大值为
.
(1)求椭圆
的方程;
(2)如图所示,以椭圆
的长轴为直径作圆
,过直线
上的动点T作圆
的两条切线,设切点分别为A,B.若直线AB与椭圆
交于不同的两点C,D,求
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/8/8/1572969915473920/1572969921462272/STEM/d9c9c96b897d452b8d2dc40941c0624b.png)
![](https://img.xkw.com/dksih/QBM/2016/8/8/1572969915473920/1572969921462272/STEM/5b54e7c9c26544ca9f4fbe5b8596b659.png)
![](https://img.xkw.com/dksih/QBM/2016/8/8/1572969915473920/1572969921462272/STEM/2a320ef8c5334dc88a150fb4fae543ca.png)
![](https://img.xkw.com/dksih/QBM/2016/8/8/1572969915473920/1572969921462272/STEM/298853ea62654db6be70ee1b22ebc55f.png)
![](https://img.xkw.com/dksih/QBM/2016/8/8/1572969915473920/1572969921462272/STEM/6ae49efa623c414fb70e5ad04e3721fb.png)
(1)求椭圆
![](https://img.xkw.com/dksih/QBM/2016/8/8/1572969915473920/1572969921462272/STEM/70e1030a844c45f2880f92dac5ef45d8.png)
(2)如图所示,以椭圆
![](https://img.xkw.com/dksih/QBM/2016/8/8/1572969915473920/1572969921462272/STEM/70e1030a844c45f2880f92dac5ef45d8.png)
![](https://img.xkw.com/dksih/QBM/2016/8/8/1572969915473920/1572969921462272/STEM/85ebc1461dbf40a9a1dadeb26b1830c2.png)
![](https://img.xkw.com/dksih/QBM/2016/8/8/1572969915473920/1572969921462272/STEM/1fe7f4021f3847bd83be4b6b7dbed5c0.png)
![](https://img.xkw.com/dksih/QBM/2016/8/8/1572969915473920/1572969921462272/STEM/85ebc1461dbf40a9a1dadeb26b1830c2.png)
![](https://img.xkw.com/dksih/QBM/2016/8/8/1572969915473920/1572969921462272/STEM/70e1030a844c45f2880f92dac5ef45d8.png)
![](https://img.xkw.com/dksih/QBM/2016/8/8/1572969915473920/1572969921462272/STEM/3fa110b071904081b4562503f02fa472.png)
![](https://img.xkw.com/dksih/QBM/2016/8/8/1572969915473920/1572969921462272/STEM/b469e382c523407a8a50f0dd493eaef8.png)
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解答题-证明题
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【推荐2】(1)若
,
恒成立,求实数
的最大值
;
(2)在(1)的条件下,求证:函数
在区间
内存在唯一的极大值点
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c780149aef1bd77162e85f7f8906a6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83095be42f7ce77f75c4e0f71a6cd324.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35f7dcce39f3d4dc6b7faf84dc1d0a1.png)
(2)在(1)的条件下,求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c176ec440bdf80bead9cb5ff9cf95ce0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d56f1c70adf39a806ba0357df50cde5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d9000448e39783b286d6eeb177f544a.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
名校
【推荐3】已知函数
在
处取到极值为
.
(1)求函数
的单调区间;
(2)若不等式
在
上恒成立,求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4989667ed1b8807b5fb8f0a195c9656.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a0bce2fe9d97a8ebf731bfde25faee.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b574f1a4ad243a29c95c62350936ef7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cc4136bd17997e11a7f8abcb19f9018.png)
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