1 . 已知
和
为椭圆
上两点.
(1)求椭圆
的标准方程;
(2)若过点
且斜率为
的直线
交
于另一点
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc039740839539ed44c9b2a77f2ba620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff6f19b42df64bcc25192f8e81b9417.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
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2 . 已知数列
的前
项和为
.若对每一个
,有且仅有一个
,使得
,则称
为“
数列”.记
,
,称数列
为
的“余项数列”.
(1)若
的前四项依次为0,1,-1,1,试判断
是否为“
数列”,并说明理由;
(2)若
,证明
为“
数列”,并求它的“余项数列”的通项公式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b708c8dcb2d66eb2ce0b3718a9cd924a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f5c62f6f57cb86e3b2e3719d9f6caa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b076b91ddd43ed88bb2127f504005a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1076fbf6b366cb2d5dde6590d3f860c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb32f6df7d866ea22308defee71a45c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f5c62f6f57cb86e3b2e3719d9f6caa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee4464b3b4eb6e52ee02f095aae84f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03b31b0145c37e9be6e4855a0408a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe229b24e2d56ff6b491725ceae4ff2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
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3 . 若函数
的定义域为
,则实数
的取值范围是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0d3ccb08d5ce3997c70c8127bb25d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da3a6d011679952771607b3a166676b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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4 . “绿水青山,就是金山银山”,随着我国的生态环境越来越好,外出旅游的人越来越多.现有两位游客慕名来江苏旅游,他们分别从“太湖鼋头渚、苏州拙政园、镇江金山寺、常州恐龙园、南京夫子庙、扬州瘦西湖”这6个景点中随机选择1个景点游玩.记事件
为“两位游客中至少有一人选择太湖鼋头渚”,事件
为“两位游客选择的景点不同”,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15003d39600a1cb5a33af76246bbc78a.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/15003d39600a1cb5a33af76246bbc78a.png)
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5 . 第一组样本数据
,第二组样本数据
,其中
则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe1c31a81f198c443e71b83ca662939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/351e486570290f0433ace7d0ecf2d473.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0249c0a6838ecd07df185a1815780579.png)
A.第二组样本数据的样本平均数小于第一组样本数据的样本平均数的2倍 |
B.第二组样本数据的中位数大于第一组样本数据的中位数的2倍 |
C.第二组样本数据的样本标准差等于第一组样本数据的样本标准差的2倍 |
D.第二组样本数据的样本极差等于第一组样本数据的样本极差的2倍 |
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6 . 已知函数
满足对
且
,有
成立,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63fc9fe63be5d09069f08ad3b4fc5c4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d13ba6d93a671ca21730facc7fbf052c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e7ee80da08376cb9a6f0ac641b2d1f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 已知抛物线
上一点
的纵坐标为4,则点
到抛物线焦点的距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e48f28aeccf369df5980ac787e9e313f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
A.![]() | B.5 | C.6 | D.![]() |
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8 . 已知向量![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
,若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d45c2d83670e3e8502f539476484b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33cd71da4a1ac3574bff54a77408a4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b696f76f21e31fb51b36d6e2f9f9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
A.![]() | B.![]() | C.![]() | D.6 |
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9 . 已知轴截面为正三角形的圆锥的体积为
,则圆锥的高为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e6a9a9b2ac597426130c04a667ca80.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 已知
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4992a71bfdcc5394bd5ab7d6cf84eeb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2fac7f65b9686509ab01c76ca189bbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb416e5a3b76057210f301b50f1e66f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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