解题方法
1 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/488418e60d1f5dfc42043c53f8ef4a5e.png)
(1)求
的最大值;
(2)当
时,证明:
;
(3)证明:
.
(参考数据:自然对数的底数
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/488418e60d1f5dfc42043c53f8ef4a5e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70be4f6136b0b0d4ba1a4a810d511cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fe15555c21773fbd8028f48d250054a.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/858355f3aee40e3a15087ed980b10d65.png)
(参考数据:自然对数的底数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e3ce576f0766f29349db973fc22eb8.png)
您最近一年使用:0次
2020-07-24更新
|
412次组卷
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2卷引用:江苏省南通市2019-2020学年高二下学期期末数学试题
名校
2 . 已知函数
有两个极值点.
(1)求
的取值范围;
(2)设
,
是
的两个极值点,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03088824bfb7a352f3dcbb9f81513898.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b916df8bdd03ba4a31c0b8470d13436.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1d22c52d255377409d6bec870658398.png)
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2020-03-22更新
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443次组卷
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3卷引用:江苏省南通市如东高级中学2020-2021学年高三上学期10月月考数学试题
名校
3 . 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)
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2018-12-07更新
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2卷引用:【校级联考】江苏省南通市南通市通州区、海门市2019届高三第二次质量调研数学试题
4 . 已知函数
,
.
(1)当
时,
①求函数
在点
处的切线方程;
②比较
与
的大小;
(2)当
时,若对
时,
,且
有唯一零点,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4487166972b905fb2c0dfc94a2ac636c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/599c96746eee25c9b523b65696885687.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
①求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f84134092f31767ff9f7e8200a79fa.png)
②比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d20fd487c74eec4c5bdc1a830da427d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/160c086005ce88fba362bd9242e7e865.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c0e7e0b498ba4672a6dc1ba6da06f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca0d0d4d8c6a1e5d90264828345a5705.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef5cc7859624574f1ef7e4892669b67.png)
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2019-12-14更新
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3卷引用:江苏省南通市通州区2019-2020学年高三第二次调研抽测数学试题
18-19高二下·江苏南通·期中
解题方法
5 . 已知函数
,
.
(1)
时,求
在
处的切线方程;
(2)对于任意
,
恒成立,求实数
的取值范围;
(3)设函数
的两个零点为
,
,求证
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8782ba2681c1453d5997882ab63bf051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b97b295f88972ba1c7e3cefda0885d.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfe44972e8bf50ec9d250f298bbee0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f29e87b084eb7d92a6544fe3132e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)设函数
![](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/f85d07bae5250632c0e02ec976b2426d.png)
您最近一年使用:0次
名校
6 . 已知函数
,其中
.
(1)①求函数
的单调区间;
②若
满足
,且
.求证:
.
(2)函数
.若
对任意,
都有
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88f339c50f567ee130a39926394cdf50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
(1)①求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d87b6b612c45cd8e5714df38a19bc54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28b953840385f8a52717e918414c6d04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad5e6ca087e4706da7b373db76a4e1bd.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03daa23fa53b5237d557f0d4ee5ef4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd534e3faa026f55eda9e0157d301ddd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e870a64070133ccbc60175a9c47fdfc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9199d2f954ea1e7494fb6ca58c5c5b20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13502d46b8563c54c09b29b20b3006a4.png)
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2020-04-08更新
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2卷引用:江苏省南通市海安高级中学2020届高三下学期模拟考试数学试题
名校
7 . 已知函数
,其中
,
.
(1)当
时,讨论函数
的单调性;
(2)当
,且
时,
(i)若
有两个极值点
,
,求证:
;
(ii)若对任意的
,都有
成立,求正实数
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c34e863ef0d33a8f6731e8de30d845.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad6c73bd513d4450aab93d4b51f0b965.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dd0914dc4d4c7f75710ff460a286fcf.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce4430b8b9b0c78de693513a7f88915.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3a915c1a8a9304aeb307d130faaeb15.png)
(i)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/ffd888afdcfdb3e91a157d50f65e915e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f4ccfe8318ddad36a10feb9c9ccb09.png)
(ii)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6d9703ec5eee8074ba7fbe0e899b336.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6cd78a1f5bc60097c938bc4c2b3dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
解题方法
8 . 已知函数
,其中e为自然对数的底数.
(1)若函数
的图象在点
处的切线方程为
,求实数a的值;
(2)若函数
有2个不同的零点
,
.
①求实数a的取值范围;
②求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f51b45c6ae148fd6ee91b3cd79050726.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9f8845aa2b51c460f2d798c9f62fa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab466aedd6e176088d8dee7bc3e3aaa.png)
(2)若函数
![](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)
①求实数a的取值范围;
②求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2547da108cae5cb131a5e5fe66cd5b4d.png)
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2020-05-15更新
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334次组卷
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2卷引用:2020届江苏省高三高考全真模拟(四)数学试题
名校
9 . 已知函数
.
当
时,求曲线
在点
处切线的斜率;
若存在
,
,且当
时,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6beeaec83d57f2f1a120d04a8804af5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc304a55feec5d8312d3082f1bb91a23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c7028a5fa4d781d382ca3b73b74796e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4848a0f1326eef03a92ec09a9a75c6ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/040135d64192de075ba0cc9f11ddbc9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dc69daf9ef182db5fa13577c378ceac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13909e2861ce1a0a64fc9e8b37463a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42a910278dbfe030e9f235f09b1ba65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b63592d23f0c40e37c220eddde351a6.png)
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2018-12-10更新
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2卷引用:2020届江苏省南通市如皋中学高三创新班下学期4月模拟考试数学试题
10 . 设函数
.
(1)若函数
是R上的单调增函数,求实数a的取值范围;
(2)设
,
是
的导函数.
①若对任意的
,求证:存在
使
;
②若
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91a8f46da6ab770ae747f49ddfa10604.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01dc407d2fee585aa0ad6a1c7b4e9ad8.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852fdeaae738c2d4c4fe4cc41f07a45b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddd17fee9cbf45582c31c1e057649436.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/399a7d3ecd1ac81b941c4b19c9b8195f.png)
①若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f36166a106aa683e231221269c6fb97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ec51c9f5a1300ae369f99be27c670f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1feb163a8af7dcf4709d7a3ef3aaa9c.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/732d70438833042815f466b1f0e7aa6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba56f8b70d256d9c278adc2de0548a78.png)
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2018-03-30更新
|
723次组卷
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2卷引用:江苏省南通、徐州、扬州等六市2018届高三第二次调研(二模)测试数学(文理)试题