1 . 已知点
分别是椭圆
:
的左、右焦点,点
在椭圆
上.
(1)求椭圆
的标准方程;
(2)设直线
:
,
:
,若
、
均与椭圆
相切,试探究在
轴上是否存在定点
,点
到
、
的距离之积恒为1?若存在,请求出点
坐标;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/d7768aa7c3fd42baa18692cba6322736.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/916fc4312fff43759820e2235dba68b1.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/b2daa60215814fa9b994d36240e23fcb.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/7077180c7d3a41d485d69b837501f051.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/916fc4312fff43759820e2235dba68b1.png)
(1)求椭圆
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/916fc4312fff43759820e2235dba68b1.png)
(2)设直线
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/5014b955b53a4f81af6c0717be9b78bc.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/ba922b55649e4a418cfe20c7abe78e9c.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/fb446bc2e55b4726a60e254e29600081.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/2d435f63bc7e4d6c8c9b19449313e5b3.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/5014b955b53a4f81af6c0717be9b78bc.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/fb446bc2e55b4726a60e254e29600081.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/916fc4312fff43759820e2235dba68b1.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/75f5bce5845e4f2b95b826acc4838606.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/27572e567a6c4a50b9bda770d43f0579.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/27572e567a6c4a50b9bda770d43f0579.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/5014b955b53a4f81af6c0717be9b78bc.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/fb446bc2e55b4726a60e254e29600081.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625790464/STEM/27572e567a6c4a50b9bda770d43f0579.png)
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2 . 已知命题
:方程
有两个不相等的实根;命题
:关于
的不等式
对任意的实数
恒成立.若“![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625659392/STEM/9f93746a76cd44ccb4080809b0e4bcbb.png)
”为真,“![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625659392/STEM/d3123e4755fc4694a49ec73ac02ae081.png)
”为假,求实数
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625659392/STEM/d10323e66ac04a7db07bc1bddfab1af0.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625659392/STEM/dbe95a192dc64dc58b7e9157e7d91dd0.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625659392/STEM/4b5d0c9f107e4f30b89212819dd1b20b.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625659392/STEM/2428b5793eba482e9d6db1098e149cbe.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625659392/STEM/9ecd889041474a12b22294c88eab42cf.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625659392/STEM/2428b5793eba482e9d6db1098e149cbe.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625659392/STEM/9f93746a76cd44ccb4080809b0e4bcbb.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625659392/STEM/4b5d0c9f107e4f30b89212819dd1b20b.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625659392/STEM/d3123e4755fc4694a49ec73ac02ae081.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625659392/STEM/4b5d0c9f107e4f30b89212819dd1b20b.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625659392/STEM/9b99ad4f2fe44ddead178103c950e828.png)
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3 . 设
,若
,则![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625454592/STEM/544a605c4117464ab1144e8eba918f45.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625454592/STEM/8380b155cc9642e283e77fff6435fe21.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625454592/STEM/aa083fc20ef147f8818a3533a37f2e23.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625454592/STEM/544a605c4117464ab1144e8eba918f45.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 下列命题中正确的是
A.若![]() ![]() |
B.“![]() ![]() |
C.命题“若![]() ![]() ![]() ![]() ![]() ![]() |
D.命题![]() ![]() ![]() ![]() ![]() ![]() |
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5 . 已知双曲线方程是
,那么它的焦距是
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625413632/STEM/089cc008119b4f56b4b3b8d38f627543.png)
A.10 | B.5 | C.![]() | D.![]() |
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6 . 抛物线
的准线方程是
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625397248/STEM/1aba2dbf549c4c7984f0cb328c0b5408.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 在
中,“
”是“
”的
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625356288/STEM/8b5a642b4bc94c13aa58134c3339ad71.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625356288/STEM/1e9390525e0b4f5b92d3ebd22b1897eb.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629619736576/1572629625356288/STEM/bebeaa2f3fc44b28b62a8944f0e26f6d.png)
A.充分不必要条件 |
B.必要不充分条件 |
C.既不充分也不必要条件 |
D.充要条件 |
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8 . 已知两点
和
,直线
、
相交于点
,且这两条直线的斜率之积为
.
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/2c40f185c3c84b54b44fd71ea366ceab.png)
(1)求点
的轨迹方程;
(2)记点
的轨迹曲线
,曲线
上在第一象限的点
的横坐标为1,直线
、
与圆
相切于点
,又
、
与曲线
的另一交点分别为
,求
的面积的最大值(其中点
为坐标原点).
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/ad5d62fa4a154078aec922c7653df0d2.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/80db3a0ffc184d41b3e43de5ab64d7d5.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/06b031f59268489fa47fc0510799e7bb.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/a693545d897a4967886682bf983af1f7.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/aed928cf399640998f36def19c29f705.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/d512b0a6fbb04b73a5015f7ace21e377.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/2c40f185c3c84b54b44fd71ea366ceab.png)
(1)求点
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/aed928cf399640998f36def19c29f705.png)
(2)记点
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/aed928cf399640998f36def19c29f705.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/4e36f81bb8db46f98654b66d1c859309.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/4e36f81bb8db46f98654b66d1c859309.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/c993cdefe8c84feb95420c1206fa3ebb.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/ea3fe9331b354222af51290d2148d488.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/003ecdd0cf9f44d59d2e9ca442f7ebce.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/189e5759b64c4a8589edf3a3eaa9c120.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/05da0adbd2ed470d85ca685927f17cf8.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/ea3fe9331b354222af51290d2148d488.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/003ecdd0cf9f44d59d2e9ca442f7ebce.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/4e36f81bb8db46f98654b66d1c859309.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/476566fc977a4698a942470a2bb3d4de.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/964806e3ac534a1b814eee6a4ce6a514.png)
![](https://img.xkw.com/dksih/QBM/2016/5/10/1572629506252800/1572629511757824/STEM/aec8e4669d22425897312ff341cc8768.png)
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名校
9 . 函数
在
处有极值10,则点
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b0e3803a794438e55fa5a4ccfd68239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63313f7ac7402fcb5a9a840db64c6f08.png)
A.![]() | B.![]() |
C.![]() ![]() | D.不存在 |
您最近一年使用:0次
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23卷引用:【全国百强校】青海省西宁市第四高级中学2017-2018学年高二下学期期末考试数学(文)试题
【全国百强校】青海省西宁市第四高级中学2017-2018学年高二下学期期末考试数学(文)试题青海省西宁市大通县、湟源县2021-2022学年高二下学期期末考试数学(理科)试题2015-2016学年江西玉山一中高二下第一次月考理科数学卷2015-2016学年江西玉山一中高二下第一次月考理数学卷2015-2016学年山西省临汾一中高二下期中文科数学试卷高中数学人教A版选修2-2 综合复习与测试 (5)甘肃省武威第十八中学2017-2018学年高二下学期第二次月考数学(理)试题人教版 全能练习 选修1-1【提分攻略】第四章 导数应用【校级联考】湖南省醴陵二中、醴陵四中2018-2019学年高二下学期期中联考数学(文)试题湖南省株洲市2019-2020学年高二上学期期中数学(理)试题广东省深圳市高级中学2019-2020学年高二上学期期末数学试题山西省祁县中学2018-2019学年高二下学期4月月考数学(文)试题陕西省咸阳市百灵中学2019-2020学年高二下学期第一次月考数学(理)试题天津市和平区耀华中学2019-2020学年高二下学期期中数学试题河南省新乡市辉县市第二高级中学2019-2020学年高二下学期第五次月考数学(理科)试卷西藏林芝市第二高级中学2019-2020学年高二下学期第二学段考试(期末)数学(理)试题四川省江油中学2019-2020学年高二下学期开学考试数学(文)试题宁夏长庆高级中学2020-2021学年高二上学期第二次月考数学(理)试题安徽省安庆市九一六学校2020-2021学年高二下学期3月月考数学(文)试题苏教版(2019) 选修第一册 选填专练 第5章 限时小练38 极大值与极小值内蒙古自治区赤峰市赤峰第四中学2020-2021学年高二下学期期中考试数学(理)试题2019年11月广西壮族自治区柳州市一模数学(文)试题2020届广西柳州市高三第一次模拟考试数学(文)试题
名校
10 . “x>1”是“x2>x”的_____ 条件.
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4卷引用:2015-2016学年青海省西宁四中高二上学期期末文科数学试卷