名校
解题方法
1 . 已知函数
在点
处的切线平行于直线
.
(1)若
对任意的
恒成立,求实数
的取值范围;
(2)若
是函数
的极值点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aeedea4789c7a84a024b4f04a685f0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea59cee971344ed593ff082a65d177c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42498f6e0fc9a61c9857b70a87f02c5e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c2abde3fa29f92916a5c6767f4683ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66692ec49a458f9e48c7315d03dfc37b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2448ff8cee34c60c5ff70dd059693146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e330a579e28c7d8569f0d0fd688264d.png)
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昨日更新
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2卷引用:福建省福州市八县市一中2024届高三模拟预测数学试题
名校
2 . 已知
,若
,则
的最小值等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d83d06d9880666fec8916fe84b553ba1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63c7bb6345a5a3e6b14dddc539db1de6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/834b864e46775f9050f6e658605f5c0c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
3 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4f1f70164cf0b8b0d2443abd03a911e.png)
(1)当
时,求函数
的极值;
(2)设函数
有两个极值点
,且
,若
恒成立,求
最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4f1f70164cf0b8b0d2443abd03a911e.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2210f152080d9a68a97c805f5c1cde96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3758849ada685e72a46268a580554f23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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7日内更新
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2卷引用:福建省厦门市厦门外国语学校2024届高三下学期模拟考试数学试题
名校
解题方法
4 . 固定项链的两端,在重力的作用下项链所形成的曲线是悬链线
年,莱布尼茨等得出悬链线的方程为
,其中
为参数.当
时,该表达式就是双曲余弦函数,记为
,悬链线的原理常运用于悬索桥、架空电缆、双曲拱桥、拱坝等工程.已知三角函数满足性质:①导数:
;②二倍角公式:
;③平方关系:
.定义双曲正弦函数为
.
(1)写出
,
具有的类似于题中①、②、③的一个性质,并证明该性质;
(2)任意
,恒有
成立,求实数
的取值范围;
(3)正项数列
满足
,
,是否存在实数
,使得
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a7e0115ce78639910150e39fdbdb0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f07f8015f0a035e80a166092be0b7318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4580cc037c0c760c728cdbb74a8154c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a7c1d3681898e25187a896aeb0c8c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf8bce35b539fdf365e9089750d4d152.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32eac4b7f177c041219fab18de973c5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af7ca3fcd9a43d520ed650b80ef2dad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0718c04bdf70989bcc90b902671a692.png)
(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a53b8e0108664bf39aa302570457199a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6e7c627427318b62d977ff7a86c2cb5.png)
(2)任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a68fd5f6e28316a932db1494deac24b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(3)正项数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c19bf566cd9dd81916f53ed33248197c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f816db73b759d7de72b0bd43ba39f46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ecf3a1fecf89a37a677393d0bfe27b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/805dabba8d859d870a1dfaaa9d97de41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2024-06-02更新
|
431次组卷
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2卷引用:福建省安溪第八中学2024届高三下学期5月份质量检测数学试题
解题方法
5 . 对于函数
和
,及区间
,若存在实数
,使得
对任意
恒成立,则称
在区间
上“优于”
.有以下四个结论:
①
在区间
上“优于”
;
②
在区间
上“优于”
;
③
在区间
上“优于”
;
④若
在区间
上“优于”
,则
.
其中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceee0ff5c929d67de3c294e027c9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a7afcf760aa4aff404eae3ad47afac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02cab1add26335b3cb43d5b54c7c853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e0827073b9db1fe6cc638ec404feba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26b5326ab91681de1317ab6517baa7e5.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd57ea26ad54a7381754ade671ef1ab4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ecd9b82656fa92f59cc80c8938e12f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4351bd617a7516709fbfdf31dc993c7.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bf266c400ec9f20afcdb1c76a62c6c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7334919736e5ed881f691e4ca738b4ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd685585c6c06d17688ae9abbea26ef1.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea1662df10f518728945bffd08a0bfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d562dc22dfb3b81d0c3f88b54d063c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdad8acb5f4d31bfee990bf844b1a37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
其中正确的有( )
A.1个 | B.2个 | C.3个 | D.4个 |
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名校
解题方法
6 . 若
,都存在唯一的实数
,使得
,则称函数
存在“源数列”
.已知
.
(1)证明:
存在源数列;
(2)(ⅰ)若
恒成立,求
的取值范围;
(ⅱ)记
的源数列为
,证明:
前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72620c113a6fe83273803a9ac24baa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59e7c7a84a4bdb959e95536d0404ceb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a038de5f1ce88d3baa95c2fd30abf7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9e8b81696639769354c282560245f0b.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)(ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38d5aa1a74419f1557aae998dbdadf87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(ⅱ)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57ef6d44448092ebdb9e4a49d866a749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773bccec5a6fe68146daa59088db27d8.png)
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2024-03-12更新
|
2188次组卷
|
5卷引用:福建省厦门市2024届高三下学期第二次质量检测数学试题
福建省厦门市2024届高三下学期第二次质量检测数学试题江苏省南通市2024届高三高考考前押题卷(最后一卷)数学试题山东省泰安市第一中学2023-2024学年高二下学期3月月考数学试题(已下线)湖南省长沙市四县区2024届高三下学期3月调研考试数学试题变式题16-19辽宁省沈阳市第二中学2023-2024学年下学期期中考试数学试卷
名校
解题方法
7 . 已知函数
(
,
)且
),若
恒成立,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82beb5a3f3d9dc2f8c2992ffb8d87744.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/406185f4ad8bcd99e23adc8d289088ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f81ed7f6a4475e0fa682fa81ee747da3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
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2024-01-25更新
|
1193次组卷
|
3卷引用:福建省厦门市2024届高三下学期第二次质量检测数学试题
名校
解题方法
8 . 函数
.
(1)当
时,求函数
的极值;
(2)若对任意
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ab046d73a179ec686c167d8b5e42f87.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c40beaf3b21a8d7d06b46d473e99d1c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad9284458cdc2f33dc3ad019c97cbe2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
名校
9 . 已知函数
.
(1)讨论函数
的零点的个数﹔
(2)当
时,若对任意
,恒有
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e511dfc0eb675805c1228d646f97d7c7.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14ab0f1e19f12666a2f649d985f0e354.png)
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2023-08-05更新
|
665次组卷
|
4卷引用:福建省宁德市博雅培文学校2023届高三高考前最后一卷数学试题
名校
10 . 已知定义在
上的函数
.
(1)求
的最小值;
(2)当
时,若不等式
恒成立,求实数
的取值范围;
(3)若
,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2956ff828b10b12656be61c6d47d7b48.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca542e78b7d77d008c9c4752afa91a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8210e8155c8ff67fd12f4bb5e6e8263f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a37a59558292ad6b3d0978bfd7484990.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d7c4053190863bdda85498f1c13c6d.png)
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