1 . 已知函数
.
(1)求值:
;
(2)判断函数
的单调性,并证明你的结论:
(3)求证
有且仅有两个零点
并求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20fa6ff2da8a574faf67845f2fd7d175.png)
(1)求值:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b131cd4ae45391fd439693590dc8d0.png)
(2)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(3)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff60eab72de85437e12806474281612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ceddc345bfa05b7c0c61ec02470188a.png)
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名校
解题方法
2 . 已知函数
有三个极值点
,且
.
(1)求实数
的取值范围;
(2)若2是
的一个极大值点,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d7d097b926e2a30f7ada313dd5cbc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若2是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d6e50474b39802eaf1f7f1800e8b3e6.png)
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3 . 若函数
,
的图象与直线
分别交于A,B两点,与直线
分别交于C,D两点
,且直线
,
的斜率互为相反数,则称
,
为“
相关函数”.
(1)
,
均为定义域上的单调递增函数,证明:不存在实数m,n,使得
,
为“
相关函数”;
(2)
,
,若存在实数
,使得
,
为“
相关函数”,且
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d71f015144ffaf1faec94a259b4a06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1be7302f2e9ff02fee3fcf26e77b1c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/475963eea170ff0bbdaf2f0b706dfc34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64d924836b4292239d9726c6473d7f5.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64d924836b4292239d9726c6473d7f5.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2e621a08099134be54e682f5724ff4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9d03c536b2d539d4051d663a77a200.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a916811b6ae474bce19ce732cf401e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a64d924836b4292239d9726c6473d7f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495021c7da1c77e6ed1d1dd30e0be7bc.png)
您最近一年使用:0次
2023-02-11更新
|
2391次组卷
|
4卷引用:湖北省武汉市华中师大一附中2023届高三下学期第二次学业质量评价检测数学试题
4 . 已知函数
.
(1)当
时,证明:
;
(2)当
时,若函数
有两个不同的零点,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/680048e78719259b708871427396bec5.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05fce924911d5ed93147dfce9e41c2b0.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78c204be088a8fc6c096eedd5b1e7dc7.png)
您最近一年使用:0次
2021-12-04更新
|
760次组卷
|
4卷引用:湖北省年宜昌市部分示范高中教学协作体2021-2022学年高三上学期期中联考数学试题
湖北省年宜昌市部分示范高中教学协作体2021-2022学年高三上学期期中联考数学试题九师联盟2022届高三上学期11月质量检测数学试题湖北省部分学校九校联盟2021-2022学年高三上学期11月质量检测数学试题(已下线)专题36 导数放缩证明不等式必刷100题-【千题百练】2022年新高考数学高频考点+题型专项千题百练(新高考适用)
名校
解题方法
5 . 已知
,
为常数,函数
.
(1)当
时,求关于
的不等式
的解集;
(2)当
时,若函数
在
上存在零点,求实数
的取值范围;
(3)对于给定的
,且
,
,证明:关于
的方程
在区间
内有一个实数根.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c498b4bb96685af346a68d41a97c12.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e384e19e1354861e7cc690ec86ee8d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9819a0c66d958a63009c3484ef719ffb.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edba05ba11ee8720c2ab52599000e646.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d479a86a1711709b2d100fe4daf3e7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7489ec7a8834ed7520fc58806d6bc6e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(3)对于给定的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4439535cb9b863d0de5107bf0a22769a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/823b887d172640b1ed3ad334e398eb7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3379346227decdac3b2461cdef56b07c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6db789c6a68761a5446ff724edc96f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebd19f709748d6ac9ba39dca27b57f4b.png)
您最近一年使用:0次
6 . 已知函数f(x)=ax2+2ax+3-b(a≠0,b>0)在[0,3]上有最小值2,最大值17,函数g(x)=
.
(l)求函数g(x)的解析式;
(2)证明:对任意实数m,都有g(m2+2)≥g(2|m|+l);
(3)若方程g(|log2x-1|)+3k(
-1)=0有四个不同的实数解,求实数k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed1904e6cc323fb460da8e9e6d417f0b.png)
(l)求函数g(x)的解析式;
(2)证明:对任意实数m,都有g(m2+2)≥g(2|m|+l);
(3)若方程g(|log2x-1|)+3k(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43d566c9880d3cb2fb9038a24490912.png)
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