已知函数
(e为自然对数的底数),其中
.
(1)试讨论函数
的单调性;
(2)若
有两个极值点
和
,记过点
,
的直线的斜率为k,同:是否存在a,使得
?若存在,求出a的值,若不存在,请说明理由
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4bf85f6ad6ef71e83af783e1ca58dae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)试讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6097169b69ad927c38efd7d52ec65f95.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/ed6334e30eb6ff2f4ceff9e695c1d1e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16552a1b3198b61e02f62592431cb583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b680c9cf0ac2e7aed2f445597eb47446.png)
更新时间:2022-05-30 23:26:20
|
相似题推荐
解答题-问答题
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较难
(0.4)
名校
解题方法
【推荐1】已知
,函数
.
(1)若
,证明:函数
在区间
上是单调增函数;
(2)求函数
在区间
上的最大值;
(3)若函数
的图像过原点,且
的导数
,当
时,函数
过点
的切线至少有2条,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/810949b76573ccd9d43af3815299d443.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e2a86516d33d9e852c516132f34acf.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa662f0273f0921c1fa4727f632395.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa662f0273f0921c1fa4727f632395.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d188ec2580e273ce87e51653a2177ee.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2316563595e29fd4279845ab8afc5ba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2316563595e29fd4279845ab8afc5ba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbab1a525c4451a43041defaa18a98f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc92606b9acfd3388d8ee03bd0b34e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2316563595e29fd4279845ab8afc5ba2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26820332294b112e27b8d7ffa4ae8631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解答题-证明题
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【推荐2】已知函数
,
.
(1)求证:
,
;
(2)若方程
有两个根,设两根分别为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34fb9c90511b2ee811077513ade22815.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71f832f699caf5db1c2d5513e0eada3e.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bad5c8a4e4bad474651c0a61de820ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/940adbf54e96ecb2bb2637e5f976a3b0.png)
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86eff5761f61a20c240a428f2a7ceda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347619bcad6baab6f429c174a12da75e.png)
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【推荐1】已知函数
且
.
(1)讨论
的单调性.
(2)若
有且仅有两个零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc08c35a531302a9901c947800b3d62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.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/0a6936d370d6a238a608ca56f87198de.png)
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解答题-问答题
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解题方法
【推荐2】已知函数
.
(1)讨论
的单调性;
(2)设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f46a13297035069791fec890b2d7f7b.png)
,当
时,若对任意
,存在![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05669f21ce6000b925fedffb80627e98.png)
,(
),使
,求实数
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c5b0bbac1d1e4292d6300443c55bd5d.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f46a13297035069791fec890b2d7f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cec32fdbadc83d59b057680b5ab630d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87348f632b0064b0e305133c4e149f11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05669f21ce6000b925fedffb80627e98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6066d8d4c0018b1ead1037e5b858fde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff2aa68223dfc02f39d7d10fa005387.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c325eb8d56efe097f20d20c9489a5df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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【推荐3】已知函数
.
(1)若
,求函数
的极值;
(2)讨论函数
的单调性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7879c5a3f9b216e32bfb765ddc0f7bc7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ffecb03c47be920254c4ccffa5b222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
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【推荐1】设函数
,其中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)当
时,讨论
单调性;
(2)证明:
有唯一极值点
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ed01e40d121539c70f7df253c36490b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9a90825530b0276574c6c691198b92f.png)
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【推荐2】已知函数
.
(1)求曲线
在点
,处的切线方程;
(2)确定
在
上极值点的个数,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/396b7e43facc813a0dfd7bbad5ab3e6e.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/607f0f66e55f895bddbff0e03184c392.png)
(2)确定
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d0e7690b99c0a76b365cf5a01d9b352.png)
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【推荐3】已知函数
.
(1)讨论函数
在定义域内的极值点的个数;
(2)若函数
在
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恒成立,求实数
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(3)当
且
时,试比较
与
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29d45d8936608032ae4746de775d1542.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9969579873ca49a7581e4cdd1c89c8b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fe38ccfd3bc4b10b7c51a9089648196.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f4e30ef3c268ca5b374b4147827063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/916bb2cc1b29574ff95b47567c59ee0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21485c942d307ba8aea57c089bbc8b48.png)
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【推荐1】已知函数
,其中
.
(1)讨论函数
的单调性;
(2)若函数
存在两个极值点
,
(其中
),且
的取值范围为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9642f802fb86ce3db353f032f25163cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.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/684bcf84f0a266515bfafde0da903050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c9bd7748b39ce2333ca5a03d73d331.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc21a93485352a44a80539276947a243.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐2】已知函数
.
(1)当
,
时,求证
恒成立;
(2)当
时,
,求整数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c47850d9a29a648cac2648a72e1e0000.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81ed7f6a4475e0fa682fa81ee747da3.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ede78fd7ac619ea597856254bb5d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0d0d6f49220326be0bc66e8d1f814f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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【推荐3】已知函数
.
(1)求函数
的单调区间;
(2)若函数
在
上是减函数,求实数
的最小值;
(3)若
,使
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/652dd5fc842b647bd1f96c8cff2c969d.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79fe3414b32bbd1190b41ed8307f905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1970aadd086db2660bc7ef3957a458dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06c4df9c5e8215c29c78d9a8dbf1465b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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