解题方法
1 . 在△ABC中,
,且面积等于2,若点P是△ABC所在平面内的一点,且
,则
的最大值等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39a2d2b2b666b03344637a73e05f5226.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274664c4b01afb25233f8b24edc4bdd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bea2ee6084ccda017840830036dddc23.png)
A.9 | B.15 | C.19 | D.25 |
您最近一年使用:0次
名校
2 . 已知向量
与
,其中
.
(1)若
,求
的单调递减区间;
(2)若
,且
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d1a25805ab7ebc60b0aa431438d80c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ce84ad45eeee9d701fd02818afccb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5caabda288fc01cc168938846eec5d2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8821e90fca55bf1b5039d1ee4f2f340.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5224a7da7fe6bc28971ce4c277f88588.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02f7d08d10754ff3903d139768f40530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32050a5d480cd881b439c1c326af0ca3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af87a22a39bd12c4734b0bdf1596b42a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
您最近一年使用:0次
2023-05-20更新
|
303次组卷
|
2卷引用:辽宁省辽东区域教育科研共同体2022-2023学年高一下学期期中考试数学试题
解题方法
3 . 在边长为2的等边三角形
中,
为边
上的动点,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a543dfa837a1d3a534eb826f66cd67a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 在平面直角坐标系
中,已知
,
,
,
(1)若
,求实数
的值;
(2)若
与
的夹角为锐角,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dde9cb3c2c078d44940f226ca200762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5b8583acf0b89997429dbbaa837c3fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21dc9f82e788085e0bb47709afd53785.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/090c50df66fbb554037821411d515623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9cd8bbf47b69bbd7a6263b041290d11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8364166bf292fd6c7d1d61d44cf4f850.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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解题方法
5 . 直角三角形
中,
,
,若点
满足
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e4f0c1c9cca0555906d8a53e1a6803d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b8e3e5d6bcb51f5a2317501feb73ecd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/645ce289c7cd2c004a200cfe5372d36b.png)
A.![]() | B.![]() | C.![]() | D.0 |
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6 . 已知向量
,
满足
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c8243a92d4692fdccadfa46fcef2dd2.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0209b4f2c47bf217b9bf613c63b77056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af1bb93a0b29370d1e45e64250bfc17b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c8243a92d4692fdccadfa46fcef2dd2.png)
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解题方法
7 . 在直角坐标系
中,已知两点
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93186e236df028e67bef0ed5ca478eea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/953d8a0299209f216fc5e025558b09eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71e5e815fc2bbf03d424b52fa920dd0e.png)
A.![]() | B.![]() | C.![]() | D.1 |
您最近一年使用:0次
2023-05-11更新
|
276次组卷
|
2卷引用:辽宁省丹东市敬业实验高级中学2022-2023学年高一下学期期中数学试题
8 . 已知向量
,若
的夹角为钝角,则实数m的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a8dbdb12832d5540554de5d6e81da5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e8b95a61af300412fc65f846089028.png)
A.![]() | B.![]() ![]() | C.![]() | D.![]() |
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9 . 已知
中,
,M为线段BN上的一个动点,若
(x、y均大于0),则
的最小值______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d2e12d456e20f96c87e0587404ff4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82d44d46e88d3084ed065bb1ecea73b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/957ce61b5c5c77ec7e84012a2c6b8ccc.png)
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10 . 已知向量
,
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcbcc85521ef83792fe4d15b99f9f846.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a79e50003508b00aa7d731344564ac3b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-04-18更新
|
1712次组卷
|
8卷引用:辽宁省鞍山市第一中学2022-2023学年高一下学期期中考试数学试卷