名校
1 . 已知点列
满足:
,
是自然数,且
,
,
.
(1)若
,求
的表达式;
(2)已知点
,记
,且数列
单调递减,求
的取值范围;
(3)设(2)中的数列
的前
项和为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee6ab09715b2211b4c30c0a66b82bbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65651d338c5e6ea8e8c85cb96fdca33c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c861e3728c51f2f447c24880cb7f0f4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87a60302649eb940748da818199e55da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a0cf06beb7cfde2c2ce4796bfe6d7c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e34908326e74f6c3132fa0e132e64ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8743a10421b51fd1734929a318b613a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)设(2)中的数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.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/7bab7d5109d3c2088479ada60bf5b7d6.png)
您最近一年使用:0次
名校
2 . 已知
.
(1)若向量
,求
的值;
(2)若向量
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b4175e386fe43c7d978399ba879abf7.png)
(1)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26eeefc4edf0053e9a00ab7d4c350d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b0fe4d834e8eaca89ceaf9c64cdabd9.png)
(2)若向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dec9da1a84c65b9698c1cd70851dfdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f208cd288e41ca2ba27c6c47d7647da.png)
您最近一年使用:0次
2020-05-27更新
|
3435次组卷
|
7卷引用:山东省青岛市胶州市2019-2020学年高一下学期期中学业水平检测数学试题
山东省青岛市胶州市2019-2020学年高一下学期期中学业水平检测数学试题(已下线)第06章+平面向量及其应用(A卷基础篇)-2020-2021学年高一数学必修第二册同步单元AB卷(新教材人教A版)安徽省亳州市涡阳第—中学2020-2021学年高一下学期期末数学试题河北省深州市长江中学2020-2021学年高一下学期期中数学试题(已下线)第六章 平面向量及其应用单元自测卷(二)(已下线)期末考测试(基础)-2021-2022学年高一数学一隅三反系列(人教A版2019必修第二册)广东省肇庆市第一中学2023-2024学年高二上学期开学考试数学试题
名校
解题方法
3 . 在平面直角坐标系
中,点
点关于原点
对称的点为
二次函数
的图像经过点
和点
回答以下问题:
(1)用
表示
和
的图像的顶点的纵坐标;
(2)证明:若二次函数
的图像上的点
满足
,则向量
与
的数量积大于
.
(3)当变
化时,求
中二次函数顶点纵坐标
的最大值,并求出此时
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7159c5e4e839eb66a5b9f91060ac2137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0925a8681562ebfa9190b267e85099.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb9ad466c2dcbbe064bad2828ea0ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0925a8681562ebfa9190b267e85099.png)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb9ad466c2dcbbe064bad2828ea0ce7.png)
(2)证明:若二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb9ad466c2dcbbe064bad2828ea0ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1eaa4ee0c2fa3392cb1745abb8ae06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82973c2b6d1c407318545f1c0f32ec2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911c0a2ab5e2e85f1ad267f41cb96b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(3)当变
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
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4 . 如图,点
分别是角
的终边与单位圆的交点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/1615518f-692a-453c-a909-a57807ed2678.png?resizew=187)
(1)若
,
,求
的值;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c44ad927dca1847d535e4d3b7fdf7860.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/25/1615518f-692a-453c-a909-a57807ed2678.png?resizew=187)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e6e786cf092be7473ed346780477ea1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6315bec7b40787760632a64a3bebdaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f407134cad46827104d6654d92db1198.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff8eb79da2ae1202feebf45ba5e795c.png)
您最近一年使用:0次
2020-02-04更新
|
207次组卷
|
3卷引用:2016届上海市闵行区高三上学期期末质量调研考试(一模)(理)数学试题
解题方法
5 . 在
中,角
的对边分别是
,已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a4b547a49af43f9d565994f90e2e10.png)
(1)证明:
;
(2)若
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce7af7c5df749c6fa9bbe87faa72c66d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88f2599ca8b6b683e57a82699c8b1ebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a4b547a49af43f9d565994f90e2e10.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc0f5f8d095ba277cd5e6409c4fdd81a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b64af28c24767dd9a64e49e5948c806.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次