如图,
与
的面积之比为2,点P是区域
内任意一点(含边界),且
,则
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c6c40347ace963dad3358084495f288.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
23-24高三上·河北沧州·期中 查看更多[7]
河北省沧州市沧州部分高中2024届高三上学期期中数学试题(已下线)第03讲 平面向量基本定理及坐标表示-【寒假预科讲义】(人教A版2019必修第一册)(已下线)第6.3.1讲 平面向量基本定理-精讲精练宝典(已下线)第06讲 6.3.1平面向量基本定理-【帮课堂】(人教A版2019必修第二册)(已下线)6.3.1 平面向量基本定理-同步题型分类归纳讲与练(人教A版2019必修第二册)(已下线)6.3.1 平面向量基本定理——课后作业(巩固版)(已下线)高一下学期期末复习选择题压轴题二十三大题型专练(1)-举一反三系列(人教A版2019必修第二册)
更新时间:2023-11-15 16:59:34
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【推荐1】①若
,则
与
,
共面;
②
与
,
共面,则
;
③若
,则
,
,
,
四点共面;
④若
,
,
,
四点共面,则
.
则以上结论中正确的有( )个
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/831ad6e505a0d6e3cbb092209a3b3064.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d806f27eecf5aee1e75bf35acbcd4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9d806f27eecf5aee1e75bf35acbcd4c.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/831ad6e505a0d6e3cbb092209a3b3064.png)
③若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9048b98d731aa60f699e141bcfdf5ad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/9048b98d731aa60f699e141bcfdf5ad2.png)
则以上结论中正确的有( )个
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【推荐2】已知a,b,c分别是△ABC的内角A,B,C所对的边,点M为△ABC的重心.若a
+b
+
=
,则C=( )
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/230d8f4e80dd0f2ae874043632acda0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eefc742ea1edd7695e152730430a863.png)
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【推荐1】已知
中,
是
上一点,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92bd01aaf9df340949645c86e1432839.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1207d5e2f34144335a0992d6aba7500d.png)
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【推荐2】在
中,
,
,
,
为
边上的高;O为
上靠近点A的三等分点,且
,其中
,
,则
( )
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