名校
解题方法
1 . 已知椭圆
的两个顶点分别为
,
,焦点在
轴上,离心率为
.
(1)求椭圆
的标准方程
(2)若点
是椭圆上异于
的点,判断直线
与直线
的斜率之积是否为定值?若是,请求出该定值,若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd99c5000629d7f49499d666e68f40d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852b303689c31189cd47bb4a3220f9fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
您最近一年使用:0次
2021-08-01更新
|
395次组卷
|
3卷引用:河北省秦皇岛市第一中学2020-2021学年高二下学期7月月考数学试题
名校
解题方法
2 . 已知正项数列
的前
项和为
,且
,
.
(1)求数列
的通项公式
;
(2)若
,求数列
的前
项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.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/e27254e4690ebd4a0798a5dd26fac397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9b6e51986fe5d7a7265e0e93adcb4d.png)
(1)求数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e191086446263b7bbbd93613577c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad6933c0370a0ee2c2d05eba23027281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
3 . 在①
,②
,③
这三个条件中任选一个,补充在下面问题中,并解答该问题.
问题:锐角
的内角
的对边分别为
,且___________.
(1)求
;
(2)若
,
为
的中点,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4e41e7cd5514d3ac0e7adc537882317.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ef8ad9f9cf060771d47d36cde93afae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f094b13e968fa44fbc4e09344bf7f5e.png)
问题:锐角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60b97bb18e5ca34d22b5e827316a122a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d4746df85049d1651d3f6c30212a7a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
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4 . 已知函数
是定义在
上的函数,函数
且满足
,对任意
,都有
,若关于
的不等式
的解集中恰好有一个整数,则实数
的取值范围是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b18b60da4af2587479cc7e6d26cbfeb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e74d2d2cc66a1ee49101afca05fac2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d41acc47493556617fe7b9e55093d10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2009d40092d8d8fb785f433930a3a064.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60e52147a9dc6f47cc0cbe2e14fb2461.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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5 . 已知二项式
展开式中所有项的系数之和为
,所有项的二项式系数之和为
,则
的最小值为___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56a077990efca00c2a2ca53ffa7e1940.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86c5b46e81044efa7090be7ae678ff72.png)
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名校
解题方法
6 . 已知函数
,若
,则实数
的取值范围是___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e980c3a147bdccef4f5165bad2d41c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9865b855dbc0be99e3bb6f3265052846.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
7 . 如图,正方体
的棱长为1,线段
上有两个动点
、
,且
,则下列结论中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/c6f08926-5d75-4838-a1f5-271d37a0d041.png?resizew=199)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f115f2683c0422042f1846450885e7fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/c6f08926-5d75-4838-a1f5-271d37a0d041.png?resizew=199)
A.![]() ![]() |
B.![]() ![]() |
C.三棱锥![]() ![]() |
D.二面角![]() ![]() |
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名校
8 . 在
中,内角
,
,
的对边分别为
,
,
,已知
,
,
,则
的周长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c5f230e4b90954a11db30652d9efeb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e2db456e49ac3632cc831a4adea9db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
9 . 已知向量
,
,则下列向量与
平行的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e62e4fda0429cab9db72b32109c0d9e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894bd6970b610adaf6d7856aaf7fd3b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8827d05338e55f9b60f882d66492ff70.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2021-07-28更新
|
231次组卷
|
5卷引用:河北省秦皇岛市青龙满族自治县实验中学2022-2023学年高三上学期11月期中考试数学试题
河北省秦皇岛市青龙满族自治县实验中学2022-2023学年高三上学期11月期中考试数学试题【全国百强校】陕西省西安中学2019届高三上学期期中考试数学(文)试题(已下线)解密09 平面向量(讲义)-【高频考点解密】2021年高考数学(理)二轮复习讲义+分层训练(已下线)解密09 平面向量(讲义)-【高频考点解密】2021年高考数学(文)二轮复习讲义+分层训练福建省莆田第一中学2022届高三上学期期中考试数学试题
名校
10 . 下列说法中,正确的是( )
A.不等式![]() ![]() | B.“![]() ![]() |
C.函数![]() | D.“![]() ![]() |
您最近一年使用:0次
2021-07-27更新
|
359次组卷
|
2卷引用:河北省秦皇岛市青龙满族自治县实验中学2023届高三上学期期末数学试题