设向量
,
,且
与
的夹角为
,
,若
在区间
上恒成立,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/364e28aca08a096a0f4732785989f347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6974594779040baa6743a8a7df9ccbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb80eb942aafb194fadc473776f35b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/433b94c39737727e53468df419d8314a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44917f942c3fd36614f58d47b5fe1821.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61aa26a2428a6cc60085e40c47cb58da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cd3ebe59ec25ab2c5fdc5fbaddc73e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d1d8c2a1f5926f8a853edd8bbe0dfe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() ![]() | B.![]() ![]() | C.![]() ![]() | D.![]() ![]() |
2022高三·全国·专题练习 查看更多[1]
(已下线)专题8.6—平面向量—综合练习2-2022届高三数学一轮复习精讲精炼
更新时间:2021-12-02 20:07:51
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【推荐1】设点
,
,圆
:
,点
满足
,设点
的轨迹为
,
与
交于点
,
,
为直线
上一点(
为坐标原点),则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ba5cbb31299d683ac6c7dd795db85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b694d668a51707c06b1b911f92b407b8.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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A.4 | B.![]() | C.2 | D.![]() |
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【推荐2】已知直线
与圆
相交于
、
两点,
为坐标原点,若
,则实数
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e0c4f7de0a94be0e0c6c0e2b68ad4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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【推荐3】已知
中,
,
,
,
为
所在平面内一点,且满足
,则
的值为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca036d049f5205cf04cb1b9c5cd03f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143e743575e406a4e5009c5727282417.png)
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【推荐2】定义两个平面向量的一种运算
为
的夹角,则对于两个平面向量
,下列结论错误的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/609c4e31ba61cb6ad807955950c35d19.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64fa2fcefaf3d8868da0cb52877c5247.png)
A.![]() | B.![]() |
C.![]() | D.若![]() ![]() |
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解题方法
【推荐1】已知函数
,若
的最小值为
,则实数
的值不可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/314a5bf9ed5a767beb1e98e53de2734b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74156327e5659301f391814605688899.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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【推荐2】设
为两个非零向量
的夹角,若对任意实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddbc0e383606d56ef2259b8f313be926.png)
的最小值为2,则下列说法中正确的是
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A.若![]() ![]() | B.若![]() ![]() |
C.若![]() ![]() | D.若![]() ![]() |
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【推荐1】已知函数
,
若对任意
,总存在
,使得
成立,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e21edd34358fcca9c3937f2d598548bf.png)
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【推荐2】已知函数
区间
上恒有
,则实数a的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8f78d93215522c57a36d08ef867cc8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/205efede8a84a0dff61bdf7e4780516f.png)
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解题方法
【推荐3】已知函数
,若不等式
对任意
恒成立,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6402c0bac81f4831121e4948c10f9212.png)
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