已知函数
,
.
(1)当
时,求证:
;
(2)若
是函数
的导函数,且
在定义域
内恒成立,求整数a的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c959ecfabe4d3d8f429f8c96467eb29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5175dc08a253b3fd0e306d015bbae502.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6292948411620a2c340542afedf898cd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5465c14a0e2e8705ee70cd4e88283a13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
21-22高三上·贵州黔东南·期末 查看更多[3]
贵州省黔东南自治州镇远县文德民族中学校2022届高三上学期期末数学(理)试题(已下线)专题10 利用导数研究函数的极值与最大(小)值 (十二大题型+过关检测专训)(已下线)专题07 函数与导数常考压轴解答题(12大核心考点)(讲义)
更新时间:2023-12-11 09:46:44
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解答题-证明题
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较难
(0.4)
名校
解题方法
【推荐1】已知函数
的导函数为
.
(1)求证:
;
(2)若
,函数
在
上的最小值为
,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fff1beefb3cfacc5199758d373eb4254.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94ff3ef2bb718df2ae86af209ae2f3f7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be9c356bdd019a12e04c43d72a4f051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55bade3c4ecdb59bcc2138581fd924ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7de314e0af9372b425b2e315e0e1ddb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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【推荐2】已知函数
.
(1)求
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;
(2)证明:
,都有
;
(3)若
,且
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.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdf8d7664fb3b01fe5f6ce3c1b97f97d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb87c830a03204a5b783ad4c2ba49c4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b3ae7e5228fd1acb0d46f6941143a7.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/183c9869a29bb7e3e50886e6f1b59fcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6200947d2077dd6d52cfcdb0fce877d4.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859458471c86ae39e0cc42d2d960d03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e76ede7cee33650d782bfc3478812f5e.png)
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【推荐3】已知函数
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(3)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/176133b616c3d98b0fec120dc90003b5.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f52cb58b6bc5d71030463ba7e28134.png)
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(2)在(1)的条件下,证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e34f42b3be15518c29e3689c9fe6d6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
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【推荐1】已知函数
,其中实数
.
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的单调性;
(2)当
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13c35a01c2405d467280c971a31a733e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84bc84ffb43ddca903dca588fcf0d8e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐2】已知函数
.
(1)讨论
在
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(2)若对于任意
,若函数
恒成立,求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66134e2ddbd44bfab7b0422f282b5359.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55cfcbb5c5950e18a8452b38bb17036.png)
(2)若对于任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb48434bdcafb5e084fc0b6396cb9469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8291ca77106b0bcd3de09a4b9e63504.png)
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【推荐1】已知函数
其中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c7135fe21e4aae80d801d96fbc45a87.png)
(1)讨论
的单调性;
(2)若
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的最大值;
(3)设
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.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d4146139d1e1dcb5fa670ff7be6cf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c7135fe21e4aae80d801d96fbc45a87.png)
(1)讨论
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36b98ef143f8159f3a7dafa1fd2f2370.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2c91713b190f3cfd59d838f38c74579.png)
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解题方法
【推荐2】已知函数
(
).
(1)求函数
的最大值;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3647ea5facac44d83031f5c1a8eaa75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eda48853e8bdb7e266370b4e0d5a258.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a4deaf532ff86a0f04fae1545b7cd6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afac6519ddcd76f91c9e6100760d2cd0.png)
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