名校
解题方法
1 . 在①
,②
,③
,三个条件中任选一个,补充在下面问题中,然后解答补充完整的题目.
已知向量
,
, ,若
,
,且
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed07e99386d4031c10569f797187ffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8801f3af7e8ae79b25455a4e76109200.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5aa846a5b7c96fe2ce665eb1ea5f0e.png)
已知向量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38422db79bd5c61fd0b4aaa6b7e67d9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360c6b5f2ca5317e555e72ee2e6c51ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65b6c42393fae47c51101713167ff71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8d88054c08b24133a1bb1c86f1ceab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c8730262dbda445dffe5e8d72bc1079.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
您最近一年使用:0次
名校
2 . 在
中,
,
,
,
为边
中点.
的值;
(2)若点
满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d39387c135503a2b870b3bcbe57d5eb.png)
,求
的最小值;
(3)若点
在
的角平分线上,且满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ec67d2710d07f8191686cf01ccb4481.png)
,若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e4cec8a7b87c2bc9fb135eadb7aa5c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8bd8c13192ca45c16dad5d59b547220.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/cd59cb5282ab5f5e744cbc089b0d435c.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d39387c135503a2b870b3bcbe57d5eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d3b8555a8c346eacd2fe75d9d7e948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9787fa192dc4267f0630ab042b7aca52.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ec67d2710d07f8191686cf01ccb4481.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78362e543d6e6f6e47e42ddef6a0885f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/346061e40a77900cc18ad62901bb57ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d357ee0818fbddc2747b129f7ba7cf71.png)
您最近一年使用:0次
2021-08-24更新
|
582次组卷
|
3卷引用:浙江省绍兴市诸暨市2019-2020学年高一下学期期末数学试题
3 . 在
中,设
,记
的面积为
.
(1)求证:
;
(2)设
求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59146c0725095d4bca6caa7b3357ecc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba2a1bf3e72ec2c2004495bc5a5aa68.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a5a13ec22ea22408270baaaf4514eaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0066f0f0e650bc85331c4e3db945f4b5.png)
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4 . 直线
分别与直线
和
交于
,
两点,
与
交于点
,
为坐标原点,当
到
的距离最大时,
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ffe059ba40701eeceaabf96b38a0d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d74a7594d973d14d558604f88067b051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e3d542652849859c1187033b59b52ad.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/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/634f94115d7f2c784732e51975bd7dcd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-08-06更新
|
433次组卷
|
4卷引用:四川省达州市2020-2021学年高一下学期期末数学(文)试题
5 . 下列命题正确的是( )
A.若![]() ![]() ![]() |
B.已知![]() ![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.设![]() ![]() ![]() ![]() |
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解题方法
6 . 设向量
,
,函数
.若函数
的定义域为
,值域为
.给出下列四个结论:
①
; ②
; ③
; ④
.
则
的值可能是__________ .(填上所有正确的结论的序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7a2da5d19f41b6a9ff1927b297f16c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77ef619c3d3dad28d7fa6ce6c54ad033.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a26c2087e3a2711f42846403839c200e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f030c36bb8786df88d401792062a4100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa66623cf54b42d6d12be4c8edaa7071.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3b9a20c31e397ae1dc8a44baf7de91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86ebba6ed1add0fe647c0226614b9290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f99376e6b053ffd21b179108c18c3d3.png)
则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13502d46b8563c54c09b29b20b3006a4.png)
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7 . 已知函数
的图象经过点
,且一个最高点的坐标为
.
(1)求函数
的解析式:
(2)设
,
分别为函数
的图象在
轴右侧且距
轴最近的最高点和最低点,
为坐标原点,实数
,若函数
在
上的最小值为
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0c6e62e0bb295e11599f7ede8e44ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7160d93f92089ef36f3dab809d3114b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/191460b7de84d14271253cc51bbe0b39.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a4d1d5e8c869611368e5e357225154.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1b09370a4e68c722a302b3b056645e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07d73a65f38cfbd3c1a7797365eb2874.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf3d3564c61e5e9c39a9e2cf2de048b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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解题方法
8 . 在
中,角A,B,C的对应边分别为a,b,c,且
的外接圆半径
.再从①
;②
;③
的面积为S满足
这三个条件中任选一个补充在问题中,并解答.
注:如果选择多个条件分别解答,按第一个解答计分.
(1)求角B;
(2)求
周长的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18483c9c195ecd922772527fa85c0fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3db23a3da04105426895256ded9c267f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efbe5905a985bd39359f90752c10100.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c30b1cd4bd6379a2695a6bc35802955.png)
注:如果选择多个条件分别解答,按第一个解答计分.
(1)求角B;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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名校
9 . 如图所示,半径为1的圆
始终内切于直角梯形
,则当
的长度增加时,以下结论:①
越来越小;②
保持不变.它们成立的情况是( )
![](https://img.xkw.com/dksih/QBM/2021/6/23/2748942501691392/2767689866117120/STEM/111d87a2e8d24604a5031a3fd2647815.png?resizew=143)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca0c65ea58b5de821500ed43d3e0f7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd34048c2ebfd0a8475364dd9a4edaf6.png)
![](https://img.xkw.com/dksih/QBM/2021/6/23/2748942501691392/2767689866117120/STEM/111d87a2e8d24604a5031a3fd2647815.png?resizew=143)
A.①②都正确 | B.①②都错误 |
C.①正确,②错误 | D.①错误,②正确 |
您最近一年使用:0次
2021-07-20更新
|
342次组卷
|
3卷引用:上海市建平中学2020-2021学年高一下学期期末数学试题
名校
解题方法
10 . 设直线
,
互相垂直于
,
,
是直线
上的两个定点,满足
,
、
是直线
上的两个动点,满足
,若
的最小值是
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5706585ba6918b24b5694f522168382.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/957d9e88d1386f1a85a35ee31fccf113.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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f82432e6351f381c0008e5bc6b545f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3728d1c17bd92866025193c752121a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3aab28a20b5bf47040aaec03b1eb550.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5706585ba6918b24b5694f522168382.png)
您最近一年使用:0次