14-15高三上·湖北黄冈·期中
名校
1 . 定义域为
的偶函数
,当
时,
,若关于
的方程
有且仅有6个不等的实数根,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/265e5ba447cddc0bcff640e53bd0ab87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/233bb67b9b82233436a939db2230cb1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2019-11-30更新
|
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11卷引用:湖南省常德市石门县一中2017届高三上学期8月单元测理科数学试题
湖南省常德市石门县一中2017届高三上学期8月单元测理科数学试题(已下线)2015届湖北省黄冈中学高三上学期期中考试理科数学试卷【全国百强校】天津市南开中学2019届高三上第二次月考数学试题(理科)上海市第二中学2017-2018学年高三上学期10月月考数学试题(已下线) 专题13 分段函数的性质、图象以及应用(练)-2021年高三数学二轮复习讲练测(新高考版)(已下线)2021年高三数学二轮复习讲练测之练案 专题十五 分段函数的性质、图象以及应用(文理通用)(已下线)专题2-1 函数性质及其应用(讲+练)-2(已下线)专题7 嵌套函数与函数迭代问题【讲】(压轴题大全)辽宁省大连市育明高级中学2019-2020学年高一上学期期中数学试题(已下线)专题10 函数与方程综合辽宁省抚顺市第一中学2023-2024学年高一下学期4月月考数学试题
2 . 已知互异的正实数
、
、
、
满足
.
证明:从
、
、
、
中任取三个数作为边长,共可构成四个不同的三角形.
![](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/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c570c70a0b68cdedd9f14e972299f8e5.png)
证明:从
![](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/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365b38a7689a8eede6820cd6f1fe952b.png)
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3 . 已知函数
.
(1)当
时,求
的单调性;
(2)若
,且方程
有两个不相等的实数根
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e601f20bcf2bcff8c9bd45dada47ca32.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c7b69e93488fcd2a195cb9793e94fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b79d97e5d16562dbe240c769d508d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50cc8b00fb56a8f183d5f53ddf27a046.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c701c5c07f7c584aadd218d9e341d3ac.png)
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2016-12-04更新
|
1052次组卷
|
2卷引用:2017届湖南长沙长郡中学高三摸底测试数学(理)试卷
2013·江西南昌·二模
4 . 已知函数
(其中
为常数).
(1)当
时,求函数
的单调区间;
(2)当
时,设函数
的3个极值点为
,
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfd66af470ac903f1e4add0a2748478b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7326ea56be82bd616fec7e6aa3c884c8.png)
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84e059c431cb970c41b39ac331ac2445.png)
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2017-03-01更新
|
2073次组卷
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8卷引用:2016届湖南省长沙市雅礼中学高三月考三理科数学试卷
2016届湖南省长沙市雅礼中学高三月考三理科数学试卷2016届湖南师大附中高三上学期第四次月考文科数学试卷(已下线)2013届江西南昌10所省重点中学高三第二次模拟冲刺理科数学试卷(六)(已下线)2014届四川省成都石室中学高三上学期期中考试理科数学试卷2015届黑龙江省哈尔滨六中高三上学期期末考试理科数学试卷2015-2016学年黑龙江省哈尔滨六中高二下期中理数学试卷2017届安徽省池州市东至县高三12月联考数学(理)试卷江苏省盐城市2022-2023学年高三上学期期中复习数学试题
5 . 已知函数
.
(1)若
,求证:
;
(2)若
,
,求
的最大值;
(3)求证:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc651273ad842b071481556bf2e686f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dddc44a0e21df132286d426f0abd4ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a53712a4b42a1b8d6ae432649f554fcd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55f3118c69bfa54eebf1c284f20fab4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf4b12531ae5db14ebad083980805ee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a38f0c7a9ecee291e4c89752e2338cf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c9212a8d6a099d4b36bd9d954ae9045.png)
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2016-12-04更新
|
688次组卷
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2卷引用:2017届湖南长沙长郡中学高三上周测十二数学(理)试卷
6 . 已知椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
上的左、右顶点分别为
,
为左焦点,且
,又椭圆
过点
.
(1)求椭圆
的方程;
(2)点
和
分别在椭圆
和圆
上(点
除外),设直线
的斜率分别为
,若
,证明:
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ec56b59d6f2654570c2b5c4fd13a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c88c4766bb3fc6e6e44a4688d85f9da3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4159b0469eb8e61eb5f6278a80176a8.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54329a84abb204cecb237b2bf2ff2bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23418075bc5e575a773ab361010cd7a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca8afa4641ef4da861872b7653b2fbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad74f90f6e6893d41d31b52407869da9.png)
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7 . 已知函数
,其中
为常数且
.
(1)若曲线
与直线
相切,求
的值;
(2)设
,
为两个不相等的正数,若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01cff53bc0df7d02f0887fc50523f4e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
(1)若曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66ab1d9823ecd58f359ac423b8eacce1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](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/859458471c86ae39e0cc42d2d960d03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5120da38792c0c52a5f54cc7912e290f.png)
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8 . 已知椭圆C:
+
=1(a>b>0)的左、右焦点分别为F1(﹣
,0),F2(
,0),过点F1的直线l与椭圆C相交于A,B两点,且△ABF2的周长为8.
(1)求椭圆C的标准方程;
(2)过点M(﹣a,0)斜率为k的直线交椭圆于点N,直线NO(O为坐标原点)交椭圆于另一点P,若k∈[
,1],求△PMN面积的最大值.
![](https://img.xkw.com/dksih/QBM/2016/7/8/1572898373492736/1572898379399168/STEM/b97b1c7ac9794d479e9c254e29897368.png)
![](https://img.xkw.com/dksih/QBM/2016/7/8/1572898373492736/1572898379399168/STEM/b69709ec01f2423cb577035574f88126.png)
![](https://img.xkw.com/dksih/QBM/2016/7/8/1572898373492736/1572898379399168/STEM/29c3edb722324278b06a04669e76e3e0.png)
![](https://img.xkw.com/dksih/QBM/2016/7/8/1572898373492736/1572898379399168/STEM/29c3edb722324278b06a04669e76e3e0.png)
(1)求椭圆C的标准方程;
(2)过点M(﹣a,0)斜率为k的直线交椭圆于点N,直线NO(O为坐标原点)交椭圆于另一点P,若k∈[
![](https://img.xkw.com/dksih/QBM/2016/7/8/1572898373492736/1572898379399168/STEM/f7fe349330fe4084b05f6ce7673d9efd.png)
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名校
9 . 如图,设D是图中边长分别为1和2的矩形区域,E是D内位于函数y=
(x>0)图象下方的区域(阴影部分),从D内随机取一个点M,则点M取自E内的概率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf35027e76f8ea593f82023973d4aba3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/29/ccd7d99d-2eea-44b1-8a76-f1636c587d5b.png?resizew=122)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2016-12-04更新
|
1861次组卷
|
4卷引用:2017届湖南长沙长郡中学高三入学考试数学(理)试卷
2017届湖南长沙长郡中学高三入学考试数学(理)试卷2020届湖南省岳阳市第一中学高三上学期第一次质量检测数学(理)试题2015-2016学年贵州遵义一中高二下联考理科数学试卷(已下线)专题25 统计类(解答题)+概率(几何概型)-2
10 . 已知
是函数
的极值点,
自然对数底数.
(I)求
值,并讨论
的单调性;
(II)是否存在
,使得当
时,不等式
对任意正实数
都成立?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b12bdb1e0f8019a1324638dfa148c171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(I)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(II)是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48173eca677d645ccf8a2e5bc489ccec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b782405567582da2045cdc2d34910835.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a6bc4569292e16d146d7ac5d8959f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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