解题方法
1 . 已知函数
.
(1)若
,讨论函数
的单调性和极值情况;
(2)若
,求证:当
时,
;
(3)若
,求证:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53b3de8a032a7081161352b34ee7bc59.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/933436a516df078f4c4250d698310c13.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5a81a39630f05d9a470c1f4b3c5e524.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
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2 . 设函数
.
(1)求
的单调区间;
(2)若正数
,
满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21dbf8ae932ea38036906f0836af9e0d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若正数
![](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/dc53466518e9a8c577b12a3c304de6f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7041f803a6274be117c2fa5ede0a0d02.png)
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解题方法
3 . (1)非零实数
,满足:
.证明不等式:
.
(2)证明不等式:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57b88e53e6ca674b4cb92ba78dddf989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3845ee677d2f270cbef4f380651a7e92.png)
(2)证明不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7401aa435bfc64fee5881fc600e5a821.png)
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名校
4 . 已知函数
,当
时,
.
(1)求
的取值范围;
(2)求证:
(
).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab9b0f783f0b6a8b7c2e214e4f04d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d5d9d53504738042040c638756f55a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
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5 . 已知函数
.
(1)讨论函数
的单调性;
(2)若函数
有两个极值点
,
,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e2f8cde9c1aa755578655ff0bcd2ff6.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/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9838edb180417d941027dc6c0bd85d.png)
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名校
解题方法
6 . 已知函数
的最小值为0,其中
.
(1)求
的值;
(2)若对任意的
,有
成立,求实数
的最小值;
(3)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/197bcf8ea5e0f0b1b036c7455964f92d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac4cbc7b067862a3d9c6789b392fc068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8e6bbd1b0cf9cbea9bb3862dba81a4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc18e4235472e067ee2c3be80586b84b.png)
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2023-11-02更新
|
1132次组卷
|
11卷引用:辽宁省锦州市2024届高三上学期期末数学试题
(已下线)辽宁省锦州市2024届高三上学期期末数学试题福建省师范大学附属中学2016-2017学年高二下学期期中考试数学理试题天津市实验中学2019届高三热身数学(理)试题河南省信阳市普通高中2022-2023学年高三上学期第一次教学质量检测理科数学试题(已下线)第二篇 函数与导数专题3 洛必达法则 微点1 洛必达法则(已下线)第六章 导数与不等式恒成立问题 专题十一 利用洛必达法则解决不等式恒成立问题 微点2 利用洛必达法则解决不等式恒成立问题(2)天津市第四十七中学2023-2024学年高三上学期10月期中数学试题四川省泸州市泸县第四中学2024届高三一模数学(文)试题四川省泸州市泸县第四中学2024届高三一模数学(理)试题(已下线)专题10 数列不等式的放缩问题 (7大核心考点)(讲义)(已下线)黄金卷02
7 . 已知函数
.
(1)当
时,讨论
的单调性;
(2)设
,当
时,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c74c2e580db0f60162660fc295252299.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859458471c86ae39e0cc42d2d960d03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adfca6345fdf86040fd021e6eae70cad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4c0df3826aac527b4eb02c2ce50dee.png)
您最近一年使用:0次
2023-04-28更新
|
432次组卷
|
2卷引用:辽宁省名校联盟2022-2023学年高二下学期6月份联合考试数学试题
名校
解题方法
8 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdf645c696ce3d7f2359a26834207a8b.png)
(1)当
,且
时,证明:
;
(2)是否存在实数a,使函数
在
上单调递增?若存在,求出a的取值范围;不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdf645c696ce3d7f2359a26834207a8b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec394192e78c9756068b16fa03e7a28d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb8d996099822eca0f217afbd8e52d61.png)
(2)是否存在实数a,使函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00210f79b04a8f6bc1922433d00bc89a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
您最近一年使用:0次
2023-04-18更新
|
531次组卷
|
2卷引用:辽宁省鞍山市第一中学2022-2023学年高二下学期期中考试数学试题
解题方法
9 . 已知函数
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb48434bdcafb5e084fc0b6396cb9469.png)
(1)证明:
;
(2)若
恒成立,求
的取值范围;
(3)设
,证明:函数
存在唯一的极大值点
,且
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ad26994d2c8a65645fd7323c11b8cd5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb48434bdcafb5e084fc0b6396cb9469.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85187c85826beeca12137805293fff77.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7efeb56b59b41e0d812cbef18d41cca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb482aa5e8d535919785d3e3e1f2d7f6.png)
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10 . 已知函数
.
(1)求
的单调区间和最值;
(2)已知函数
,若
在区间
内有两个极值点
,
.
(ⅰ)求实数a的取值范围;
(ⅱ)从下面两个不等式中任选一个进行证明.
①
;
②
.
注:如果选择多个条件分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20f832421dcfb1ec8311931210a83931.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e241cef07a61a4aae88c6d11c478e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
(ⅰ)求实数a的取值范围;
(ⅱ)从下面两个不等式中任选一个进行证明.
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3a0b39ed179340810fea23d244406ce.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c98c62767b8ed71a6e0209a3652429cc.png)
注:如果选择多个条件分别解答,按第一个解答计分.
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