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
|
2162次组卷
|
25卷引用:广东省汕头市潮南区2020-2021学年高一上学期期末数学试题
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(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,割线
交圆
于
、
两点,
交圆
于
,
在
上,且满足
.
![](https://img.xkw.com/dksih/QBM/2016/11/22/1573166646697984/1573166653333504/STEM/79a3f68449234b168621f938794884b1.png)
(1)求证:
;
(2)若
,求
的长.
如图,割线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/931fa192c11e576022354aa86ee366bd.png)
![](https://img.xkw.com/dksih/QBM/2016/11/22/1573166646697984/1573166653333504/STEM/79a3f68449234b168621f938794884b1.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1175ffd874187d06cb94c61f894b61d7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/258e43ad0c6e1ff1454686d89b3769af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
您最近一年使用:0次
3 . 选修4-1:几何证明选讲
如图,AB是⊙O的直径,AD,DE是⊙O的切线,AD,BE的延长线交于点C.
![](https://img.xkw.com/dksih/QBM/2016/10/16/1573072174120960/1573072180314112/STEM/f62b66247fad4e919be28a85272086cc.png)
(1)求证:
四点共圆;
(2)若
,CE=1,
30°,求
长.
如图,AB是⊙O的直径,AD,DE是⊙O的切线,AD,BE的延长线交于点C.
![](https://img.xkw.com/dksih/QBM/2016/10/16/1573072174120960/1573072180314112/STEM/f62b66247fad4e919be28a85272086cc.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7be90d18409de7c324059f18a4fd9db7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db966856ec2cbe925bdf8ee29fc93611.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d38dd5d46dc279bbe3c20ea4e03fc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
您最近一年使用:0次
4 . 选修4-1:几何证明选讲
如图,
是圆
的直径,
是弦,
的平分线
交圆
于点
,
,交
的延长线于点
,
交
于点
.
![](https://img.xkw.com/dksih/QBM/2016/8/8/1572970456940544/1572970463412224/STEM/539a038f94474ab6afa22351b0cffc3e.png)
(1)求证:
是圆
的切线;
(2)若
,圆
的半径为2,
,求
的值.
如图,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6062582a0a1679aa777451f25008411d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/535a65c61f47d2b893706d4bc3499e20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2016/8/8/1572970456940544/1572970463412224/STEM/539a038f94474ab6afa22351b0cffc3e.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae0a715338cd0f509b4001a6e26e85c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/065f2c3527fcc9d84939c47ac8640643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
您最近一年使用:0次
5 . 选修4-1:几何证明选讲
如图,四边形
是⊙
的内接四边形,延长
和
相交于点
,
,
.
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/bab05a6b70914409b9ccc233459c2dce.png)
(Ⅰ)求
的值;
(Ⅱ)若
为⊙
的直径,且
,求
的长.
如图,四边形
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/796242376e8240199aefe3b7af00b0fc.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/34f255d17a534d258a71d8f3ff882796.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/d6ed371acc6e4996b2f42a8c118b5be4.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/171fffbca4f94670ba7239c3c5b10863.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/ad27fa310b8c42c894396f127548e31e.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/33e0c83893404c4182d1fad333f55b4a.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/2f608b8367084b3db743d06466930c68.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/bab05a6b70914409b9ccc233459c2dce.png)
(Ⅰ)求
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/2b5e290f300c44e1ac1b90735049377c.png)
(Ⅱ)若
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/0e4d178913b0425dac9efb078d769209.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/34f255d17a534d258a71d8f3ff882796.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/308884b466fa4954b7c6dfacea944e12.png)
![](https://img.xkw.com/dksih/QBM/2015/10/20/1572259485089792/1572259491373056/STEM/2da0e5184594431d821ea9176dd4f1a5.png)
您最近一年使用:0次
2016-12-03更新
|
20次组卷
|
3卷引用:2016届广东省广州六中等六校高三第一次联考理科数学试卷
12-13高二下·广东·期末
6 . 如图,A、B是两圆的交点,AC是小圆的直径,D和E分别是CA和CB的延长线与大圆的交点,已知AC=4,BE=10,且BC=AD,求DE的长.
![](https://img.xkw.com/dksih/QBM/2014/2/25/1571529570508800/1571529576112128/STEM/0e017603c63549c8b529b8d41244c9f0.png)
您最近一年使用:0次
13-14高三上·宁夏银川·阶段练习
7 . 如图,已知
切⊙
于点E,割线PBA交⊙
于A、B两点,∠APE的平分线和AE、BE分别交于点C、D.求证:
![](https://img.xkw.com/dksih/QBM/2014/1/2/1571454908710912/1571454914494464/STEM/a8ee2f252b6e49ac876894fc8562434d.png)
(Ⅰ)
;
(Ⅱ)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/2014/1/2/1571454908710912/1571454914494464/STEM/a8ee2f252b6e49ac876894fc8562434d.png)
(Ⅰ)
![](https://img.xkw.com/dksih/QBM/2014/1/2/1571454908710912/1571454914494464/STEM/0ab87b06907e49b9ba7a83791dd99339.png)
(Ⅱ)
![](https://img.xkw.com/dksih/QBM/2014/1/2/1571454908710912/1571454914494464/STEM/402c81717bd247ffaa0225f0286085ac.png)
您最近一年使用:0次
2016-12-02更新
|
591次组卷
|
3卷引用:2016届广东省深圳市南山区高三上学期期末文科数学试卷
8 . 已知圆
的方程为:
,直线的方程为
,点
在直线上,过点
作圆
的切线
,切点为
.
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/33bca3e29e0c4b7f9d5131abd5ea9285.png)
(1)若
,求点
的坐标;
(2)若点
的坐标为
,过点
的直线与圆
交于
两点,当
时,求直线
的方程;
(3)求证:经过
(其中点
为圆
的圆心)三点的圆必经过定点,并求出所有定点的坐标.
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/3d5032b8e16a48278074a9b13b8ea604.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/6abf4320c25a4066a7e2a24e538245ee.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/9d100565713a4563a2fd17c899a1607e.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/4c31d272157744d7be133a5531fb8d1f.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/4c31d272157744d7be133a5531fb8d1f.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/3d5032b8e16a48278074a9b13b8ea604.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/baabd968640d4c81a564d36fdafe7bb7.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/52b6d604ae434a779657ffd90d2bde4f.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/33bca3e29e0c4b7f9d5131abd5ea9285.png)
(1)若
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/a04519a6852340caa2812a0efeb7725e.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/4c31d272157744d7be133a5531fb8d1f.png)
(2)若点
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/4c31d272157744d7be133a5531fb8d1f.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/0845fad52439481babaf3375ad63f674.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/4c31d272157744d7be133a5531fb8d1f.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/3d5032b8e16a48278074a9b13b8ea604.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/984da381678a48959f776f3216d78b9f.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/69d161424141467b8315d21609279a9e.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/279b4101d173432fbb45f681faed7d73.png)
(3)求证:经过
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/be2e2157747d4fe5b7d90b4757732f45.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/3d5032b8e16a48278074a9b13b8ea604.png)
![](https://img.xkw.com/dksih/QBM/2014/3/28/1571585931689984/1571585937055744/STEM/3d5032b8e16a48278074a9b13b8ea604.png)
您最近一年使用:0次