解题方法
1 . 已知函数
.
(1)当
时,证明:
;
(2)已知
,
,求证:函数
存在极小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d44d5e638a975bc93491659a141d8c.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29cee707aaa2ee5798e38b9624dc396e.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80cd7a435009b8713641e5ff655179a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cb319ba3ed05f5ad4c9f56b40e43e1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
您最近一年使用:0次
名校
2 . 已知函数
,其中
.
(1)求曲线
在
处的切线方程
,并证明当
时,
;
(2)若
有三个零点
,且
.
(i)求实数
的取值范围;
(ii)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f7bac7520fa44f299a861781626472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbdef421c976962a270a2beabbad91.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8821abd8dda8b7cbfec152700ef79f4.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
(i)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(ii)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6eb8404a0443abc179871b8ebefbf9fb.png)
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解题方法
3 . 已知函数
,
.
(1)当
时,求证:
;
(2)当
时,
恒成立,求实数
的取值范围;
(3)已知
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b1868d9850b7103e1326eb001dfbce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9100abe06c208f6742dc75861a33989.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa18838a13fda4e45612c32cdf98b71.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc3e5be1796493161a4df7e28a6f6b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa18838a13fda4e45612c32cdf98b71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2aa78c96db411c9e1e939ae16de78d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d062874efc06af87693c548b09fbc91.png)
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2023-11-30更新
|
427次组卷
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3卷引用:河南省安阳市林州市第一中学2024届高三上学期期末数学试题
名校
4 . 已知函数
.
(1)讨论函数的单调性;
(2)若方程
有两个解
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecbbd36103e5f00201ab1ec0c8786932.png)
(1)讨论函数的单调性;
(2)若方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c342d52fc26cc550a45b80756903bee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b725fdc8de9800f2692f6fea8585b1e9.png)
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2024-03-03更新
|
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5卷引用:浙江省绍兴市柯桥区2024届高三上学期期末教学质量调测数学试题
浙江省绍兴市柯桥区2024届高三上学期期末教学质量调测数学试题(已下线)第五章综合 第三练 方法提升应用(已下线)专题4 导数在不等式中的应用(讲)河北省石家庄二中2023-2024学年高二下学期3月月考数学试题(已下线)模块一 专题4 《导数在不等式中的应用》(苏教版)
解题方法
5 . 如图所示,在
中,
是
上的点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/c01c123b-c457-4dc1-9447-15855f0c7a5b.png?resizew=222)
(1)若
,求证:
;
(2)若
,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbc7288c91a203fb460954522ee754c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94330f9132079008ddf26e1762e3195.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/30/c01c123b-c457-4dc1-9447-15855f0c7a5b.png?resizew=222)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25412aade92bdf99a3dc104bd0e356e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3adb3c02178498341d9bd74ae05bc7ae.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f841c3c1982826756e10f695d89b5ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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6 . 已知椭圆
的左右焦点分别为
,点
为椭圆
上异于顶点的一动点,
的角平分线分别交
轴、
轴于点
.
(1)若
,求
;
(2)求证:
为定值;
(3)当
面积取到最大值时,求点
的横坐标
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279cefeb5c389a37a71e5fd3925f5954.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94fe48bf7af022ecbbe13833fdcc2c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e099a6abe3e9566b2ad385906e323fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4ef569668e797b1e94257fd5f4384dd.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/066b9c12f71ed215ed8e98df05584f76.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64b0bac6df5da367c886f57d562c72c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
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2024-02-12更新
|
1970次组卷
|
4卷引用:浙江省金丽衢十二校2023-2024学年高三上学期第一次联考数学试题
名校
7 . 设
是正整数,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c496b822e4765fc9bb17685f39a4f05.png)
(1)求证:当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eb1296f8b1307fd35d219d51f15c242.png)
(2)求证:当
时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c496b822e4765fc9bb17685f39a4f05.png)
(1)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a79d7f73b6128650bf7aed538260c72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eb1296f8b1307fd35d219d51f15c242.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11e964999066e7ab9780d6a898bd74d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d093aa4e6b898ff1dab1a5b46519eb3.png)
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2024-02-11更新
|
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2卷引用:广东省江门市鹤山市第一中学2023-2024学年高二下学期第一阶段考试数学试卷
8 . 已知函数
(e是自然对数的底数).
(1)当
时,求函数
在点
处的切线方程;
(2)当
时,
①求证:函数
存在唯一的极值点
;
②在①的条件下,若
且
,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ddd575cc364fce97abc72303089b6b5.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7db8f867196410e2828e2bbd3183b02d.png)
①求证:函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
②在①的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c36825543013336c9df727bc51ff62c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da9cabe1ba5acf13a43ba47b290d9729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fef48ef60798be483aa190c3418e77f.png)
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解题方法
9 . 已知函数
.
(1)若
,求证:
;
(2)若
,试判断函数
在区间
上的零点的个数,并说明理由.(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30d87c47a27e28cd26579867e07ee2a6.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2bcca35c25a337eab92fd2171a1505f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17b76ec9dbfc84cc2d5f257021b725bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71163f419555f2ed76075c8ff659fbfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b71b6baa0ae674754411a821b1bce280.png)
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2024-01-22更新
|
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2卷引用:河北省保定市唐县第一中学2024届高三上学期期末数学试题
名校
10 . 已知函数.
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70317d5b4128ca9fdd6573787d1db993.png)
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2024-01-19更新
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4卷引用:山东省滨州市2024届高三上学期期末数学试题
山东省滨州市2024届高三上学期期末数学试题(已下线)2023-2024学年高二下学期第一次月考解答题压轴题十六大题型专练(2)(已下线)广东省佛山市2024届高三教学质量检测(一)数学试题变式题17-22广东省惠州市第一中学2024届高三上学期第三次阶段测试数学试题