1 . 已知椭圆
,点
,
都在
上.
(1)求椭圆
的标准方程;
(2)设
,
,
是椭圆
上不同于
,
的两点(其中
在
轴上方),若直线
的斜率等于直线
的斜率的2倍,求四边形
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd99c5000629d7f49499d666e68f40d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/182c81fb1c5e6d1a57a5f34a31ee69a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852b303689c31189cd47bb4a3220f9fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae3e029070ad0d2ce680d5336ed7150a.png)
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名校
2 . 在抗击新冠肺炎疫情这一特殊时期,上级主管部门提出了“停课不停学”的口号,鼓励学生线上学习.某数学教师为了调查高三学生数学成绩与线上学习时间之间的关系,对某班每个学生一学期的数学测试成绩和线上学习时间进行跟踪调查,得到成绩的频率分布直方图(每个学生取一学期的平均成绩,每个分组包含左端点不含右端点)和
列联表:
![](https://img.xkw.com/dksih/QBM/2021/7/6/2758527527698432/2778951831642112/STEM/a1c51842405a41a3875c490c63942336.png?resizew=252)
(1)根据频率分布直方图,估计该班数学成绩的平均分和中位数;
(2)求
列联表中
,
,
的值,并判断是否有99%的把握认为“高三学生的数学成绩与学生线上学习时间有关”?
参考公式和数据
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b72fcdc709e77910cd36a26369648b3.png)
![](https://img.xkw.com/dksih/QBM/2021/7/6/2758527527698432/2778951831642112/STEM/a1c51842405a41a3875c490c63942336.png?resizew=252)
分数不少于110分 | 分数不足110分 | 合计 | |
每周线上学习时间不少于5小时 | 5 | 30 | |
每周线上学习时间不足5小时 | |||
合计 | 50 |
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b72fcdc709e77910cd36a26369648b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
参考公式和数据
0.050 | 0.010 | 0.001 | |
3.841 | 6.635 | 10.828 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc485c58dbd6e50bfb352030f4a1c42.png)
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3卷引用:四川省自贡市2020-2021学年高二下学期期末数学(理)试题
3 . 已知函数
.
(1)讨论函数
的单调区间;
(2)是否存在整数
使
在
上恒成立,若存在求出整数
的最大值.若不存在请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c08da8971c0d0e56e140dc4c20b3c75.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)是否存在整数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ff1385e5d4f35fd8ffa377a32fc6c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79fe3414b32bbd1190b41ed8307f905.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
4 . 已知函数
.
(1)求函数
的极值;
(2)求函数
在
的最值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cae9174bb27aac8686e477710499639b.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b448fe164c2c2931805e3b3847dcdd75.png)
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2卷引用:四川省自贡市2020-2021学年高二下学期期末数学(理)试题
5 . 函数
的图象与
轴恰有两个公共点,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf67a97ab209f562f59c159eb49670ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e9bb42376c12d7d21702ae8062b25a.png)
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4卷引用:四川省自贡市2020-2021学年高二下学期期末数学(理)试题
四川省自贡市2020-2021学年高二下学期期末数学(理)试题四川省自贡市2020-2021学年高二下学期期末数学(文)试题(已下线)第04讲 利用导数研究函数的零点(方程的根) (高频考点,精练)甘肃省白银市会宁县会宁县第三中学2022-2023学年高二下学期期末数学试题
名校
6 . 若圆
上总存在两点关于直线
对称,则过圆
外一点
向圆
所作的切线长的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce944949628bae548845fe4cf0478371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfce37027e26b52e06a4b28b3fcb53ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30277e0be448b4955903e81e8795e45d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.2 | C.3 | D.4 |
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7卷引用:四川省自贡市2020-2021学年高二下学期期末数学(理)试题
四川省自贡市2020-2021学年高二下学期期末数学(理)试题四川省自贡市2020-2021学年高二下学期期末数学(文)试题江西省南昌市豫章中学2021-2022学年高二入学调研(B)数学(理)试题(已下线)2.5 直线与圆、圆与圆的位置关系-2021-2022学年高二数学尖子生同步培优题典(人教A版2019选择性必修第一册)(已下线)试卷11(第1章-4.1数列)-2021-2022学年高二数学易错题、精典题滚动训练(苏教版2019选择性必修第一册)(已下线)第三节 圆的方程 B素养提升卷四川省绵阳市南山中学实验学校2022-2023学年高二上学期期末数学模拟五
解题方法
7 . 已知抛物线
的焦点为
,准线为
,过焦点
的直线交抛物线
于
、
两点,
、
两点分别为
、
两点在直线
上的射影,而且
,
为线段
的中点.则下列命题( )
①![](https://staticzujuan.xkw.com/quesimg/Upload/formula/706725f00d4399ac392ac0ee231a4dae.png)
②
等腰直角三角形
③直线
的斜率为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72559e4556252e72badf54ac5d808d5c.png)
④
的面积为4(
为坐标原点),其中正确的命题个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f4fb72e39d79b7a0cd892fa5fa34bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f8f333303816ff66e3aa44bcf97268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/706725f00d4399ac392ac0ee231a4dae.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7516bfacb88ea94d2d5156408e9ee25e.png)
③直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72559e4556252e72badf54ac5d808d5c.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.1 | B.2 | C.3 | D.4 |
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2卷引用:四川省自贡市2020-2021学年高二下学期期末数学(理)试题
8 . 已知复数
和
在复平面上对应的向量分别是
,
,则线段
的中点
对应的复数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d67321ace1e6b3be0fc0e5e8130022.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d088dc66084b81933a20b62340c0606f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1946d701492089903985408a32bb98d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae7bb088a7ce88fee183bc8d92810743.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbc6465a6ce969457d897df59b23c655.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d67321ace1e6b3be0fc0e5e8130022.png)
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3卷引用:四川省自贡市2020-2021学年高二下学期期末数学(理)试题
9 . 在数列
中,已知
,
,且
等于
的个位数
,则
为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39222f0687c9124bddb35544bcc7798.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62bae11b31f657478e97646895a289e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a789a9be1723bfbd38ae538a9f39dc1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90707999e8fc89ae1137e5115c39f637.png)
A.8 | B.6 | C.4 | D.2 |
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10 . 设函数
,设
,
.
(1)计算
的值.
(2)求数列
的通项公式.
(3)若
,
,数列
的前
项和为
,若
对一切
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d58fc37282e1b3d8cf563eb1f3b1d889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c0c248ed072525030abee043477d66.png)
(1)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3caaf39cc15fc52ecae71ac5bc0e1c5.png)
(2)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a24e6bcf49b8e45531a2d4e4c70c181.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7484a2a1de32bebb12faf8fd55d51042.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac07236f8aad0dc78697cde903a36a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97769855336d73371930df1f187875e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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5卷引用:四川省自贡市2020-2021学年高一下学期期末考试数学(文)试题
四川省自贡市2020-2021学年高一下学期期末考试数学(文)试题(已下线)4.3.3 等比数列的前n项和(2)-2021-2022学年高二数学同步培优训练系列(苏教版2019选择性必修第一册)(已下线)专题11 数列前n项和的求法 微点2 倒序相加法求和(已下线)模块四 专题6 大题分类练(数列)拔高能力练(人教A)(已下线)专题04数列求和的6种常考题型归类【好题汇编】-备战2023-2024学年高二数学下学期期末真题分类汇编(北师大版2019选择性必修第二册)