名校
1 . 已知函数
.
(1)当
时,求函数
的值域;
(2)如果对任意的
,不等式
恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/818b938c30c3a81511ab7e181dabeb47.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66ef59c3970f3581a5ea29e21fd564d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a64f604d8732d4c264cc74b8ca5f7ce.png)
(2)如果对任意的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66ef59c3970f3581a5ea29e21fd564d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88181d8cccf01c519f4b08fb562c46d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2019-09-15更新
|
2163次组卷
|
25卷引用:重庆市第十八中学2017-2018学年高一上学期期中考试数学试题2
重庆市第十八中学2017-2018学年高一上学期期中考试数学试题2重庆市第十八中学2017-2018学年高一上学期期中考试数学试题3陕西省西安市高新第一中学国际部2017-2018学年高一上学期期中考试数学试题贵州省遵义航天高级中学2017-2018学年高二上学期期末考试数学(理)试题贵州省遵义航天高级中学2017-2018学年高二上学期期末考试数学(文)试题[市级联考】安徽省定远重点中学2019届高三上学期期中考试数学(理)试题山西省应县第一中学校2018-2019学年高二下学期期末考试数学(理)试题上海市曹杨中学2018-2019学年高一上学期期末复习卷一数学试题河北省邯郸市第一中学2019-2020学年高一上学期期中数学试题山西省大同市第一中学2019-2020学年高二下学期3月第二次考试数学(文)试题山西省大同市第一中学2019-2020学年高二下学期3月第二次考试数学(理)试题江苏省扬州市宝应县2020-2021学年高三上学期初调研测试数学试题广东省汕头市潮南区2020-2021学年高一上学期期末数学试题(已下线)专题7.2 函数综合 B卷(常考题型精选)-2021-2022学年高一数学单元卷模拟(易中难)(2019人教A版必修第一册)(已下线)专题10对数与对数函数-2022年(新高考)数学高频考点+重点题型山西省吕梁市泰化学校2020-2021学年高二下学期3月第二次考试数学(理)试题(已下线)考点15 对数函数-备战2022年高考数学一轮复习考点一遍过(新高考地区专用)【学科网名师堂】第六章 幂函数、指数函数和对数函数(选拔卷)-【单元测试】2021-2022学年高一数学尖子生选拔卷(苏教版2019必修第一册) 湖南省常德市鼎城区第一中学2021-2022学年高一上学期12月月考数学试题(已下线)第15讲 对数函数-备战2023年高考数学一轮复习考点帮(新高考专用)上海交通大学附属中学2020届高三下学期开学考试数学试题河北省定州市2022-2023学年高一上学期期末数学试题河南宋基信阳实验中学2023-2024学年高三上学期第一次月考数学试题江苏省苏州市陆慕中学2023-2024学年高一上学期12月月考数学试题(已下线)专题10 对数与对数函数
2 . 【选修4-1:几何证明选讲】
如图,P为圆外一点,PD为圆的切线,切点为D,AB为圆的一条直径,过点P作AB的垂线交圆于C、E两点(C、D两点在AB的同侧),垂足为F,连接AD交PE于点G.
![](https://img.xkw.com/dksih/QBM/2015/12/22/1572379169292288/1572379175657472/STEM/cf86b095aa2b4379b571f4206b676f07.png)
(1)证明:PG=PD;
(2)若AC=BD,求证:线段AB与DE互相平分.
如图,P为圆外一点,PD为圆的切线,切点为D,AB为圆的一条直径,过点P作AB的垂线交圆于C、E两点(C、D两点在AB的同侧),垂足为F,连接AD交PE于点G.
![](https://img.xkw.com/dksih/QBM/2015/12/22/1572379169292288/1572379175657472/STEM/cf86b095aa2b4379b571f4206b676f07.png)
(1)证明:PG=PD;
(2)若AC=BD,求证:线段AB与DE互相平分.
您最近一年使用:0次
3 . 选修4-1:几何证明选讲
如图,直线
与
相切于点
,
是
的弦,
的平分线
交
于点
,连结
,并延长与直线
相交于点
,若
,
.
![](https://img.xkw.com/dksih/QBM/2016/1/4/1572413164535808/1572413170311168/STEM/d3534f6eedf44e80a31ce4dbecbfaafd.png)
(1)求证:
;
(2)求弦
的长.
如图,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b8df24075e4eafe91ce9b5a4195d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2335610d92b3b6cddc6460ffd3af7a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5aa5694373bd78b1ca2180f831bf1c8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d86a0a3e867a448094f74a54a1fee64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2335610d92b3b6cddc6460ffd3af7a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31050fa2315bc1174bfed74c2eedb6bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9febb0e53890d2fb72fdfd7f0aa88acc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2335610d92b3b6cddc6460ffd3af7a54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca66a268d6f46e0e9d5d9151b785be60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85a5f897c14c15e6c2edb67ed035f7f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6b8df24075e4eafe91ce9b5a4195d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ecb1589c3cc179e2f62507020771e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59bc7efacae16c48593c99afc4b8ee7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47b067abe01256d1ad644907067ca6b0.png)
![](https://img.xkw.com/dksih/QBM/2016/1/4/1572413164535808/1572413170311168/STEM/d3534f6eedf44e80a31ce4dbecbfaafd.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29d633e6dd7216e98ca234a937608df4.png)
(2)求弦
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d86a0a3e867a448094f74a54a1fee64.png)
您最近一年使用:0次
2016-12-03更新
|
570次组卷
|
2卷引用:2015届江西省高安中学高三命题中心模拟押题一文科数学试卷
12-13高三·河南南阳·阶段练习
4 . 如图,在
中,
是
的角平分线,
的外接圆交
于点
,
.
![](https://img.xkw.com/dksih/QBM/2016/6/7/1572696996036608/1572697002213376/STEM/a1d2f57cf6d74c838b101b1424485b37.png)
(1)证明:
;
(2)当
,
时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd936a2405709574af0a73543d94ad9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0427054c47e348f35771872fd0215a8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c71855e55064d1dc59eabe43e73a881.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846071242f981289741ad19f4e7190cf.png)
![](https://img.xkw.com/dksih/QBM/2016/6/7/1572696996036608/1572697002213376/STEM/a1d2f57cf6d74c838b101b1424485b37.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679372e54c59c5cf67931b12b9833e02.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca036d049f5205cf04cb1b9c5cd03f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f7d9f5e71bfef8188b1216c1276c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
您最近一年使用:0次
2016-12-02更新
|
728次组卷
|
7卷引用:2014届河南省方城一高高三第一次调研(月考)考试理科数学试卷
2010·黑龙江哈尔滨·一模
5 . 选修4-1:几何证明选讲
如图,已知
点在⊙
直径的延长线上,
切⊙
于
点,
是
的平分线,且交
于
点,交
于
点.
![](https://img.xkw.com/dksih/QBM/2010/4/7/1569692868911104/1569693001334784/STEM/f064c53e1030482cada14b5002913cf0.png)
(1)求
的度数;
(2)若
,求
.
如图,已知
![](https://img.xkw.com/dksih/QBM/2010/4/7/1569692868911104/1569693001334784/STEM/c9b96029815b4fee956f1dd14b16c519.png)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1569692868911104/1569693001334784/STEM/c195da6c33724175ad833081f8b6c367.png)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1569692868911104/1569693001334784/STEM/658f5ce6c1c24beb9ee7d0862af41c9a.png)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1569692868911104/1569693001334784/STEM/c195da6c33724175ad833081f8b6c367.png)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1569692868911104/1569693001334784/STEM/86e450de1d844ab085556f65f163d0bb.png)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1569692868911104/1569693001334784/STEM/3b024db94d38400ab4778285d6a147ed.png)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1569692868911104/1569693001334784/STEM/6636f6ff0f0e4d44b6f35a63393fc31d.png)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1569692868911104/1569693001334784/STEM/babf31d6a39c44ffb64ca8294ab0d531.png)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1569692868911104/1569693001334784/STEM/3f2d4c92974d4a60b3adeefacffd3664.png)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1569692868911104/1569693001334784/STEM/4b016ec3d5b544bdbe4990ea634529a5.png)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1569692868911104/1569693001334784/STEM/2140925fcb9a4e16937624eb1dfe90f1.png)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1569692868911104/1569693001334784/STEM/f064c53e1030482cada14b5002913cf0.png)
(1)求
![](https://img.xkw.com/dksih/QBM/2010/4/7/1569692868911104/1569693001334784/STEM/0c51a0a5c8ab4cec8af8be1657b0c9b4.png)
(2)若
![](https://img.xkw.com/dksih/QBM/2010/4/7/1569692868911104/1569693001334784/STEM/58bb7d54d6444190b394bbcc7be1aaeb.png)
![](https://img.xkw.com/dksih/QBM/2010/4/7/1569692868911104/1569693001334784/STEM/f394ef40aaa64bbf9bba63b22333024d.png)
您最近一年使用:0次
2016-12-03更新
|
811次组卷
|
6卷引用:黑龙江省哈尔滨市第六中学2010届高三一模数学(理)试题
(已下线)黑龙江省哈尔滨市第六中学2010届高三一模数学(理)试题(已下线)黑龙江省哈尔滨市第六中学2010届高三一模数学(文)试题2015届贵州省贵阳市普通高中高三上学期期末监测考试理科数学试卷2015届贵州省贵阳市普通高中高三上学期期末监测考试文科数学试卷2015届黑龙江省哈尔滨六中高三下学期第三次模拟理科数学试卷2016届黑龙江省哈尔滨市六中高三上期末理科数学试卷