1 . 在平面直角坐标系中,已知点
和坐标满足
的动点
,则目标函数
的最大值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f55d14b2bedb0c9414e5b831e6dadd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e735a8a696c0f46ba8979b67de68a44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d259822ab64b8626f3893b8432673358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4298013b322c397231da1ae241b00361.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2016-12-04更新
|
461次组卷
|
2卷引用:2017届广东海珠区高三上学期调研测试一数学文试卷
2 . 已知
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb0b33553242716420e430889e4fda82.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/246735234ff53a85309a5841e2e5f5e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/550c6aa1c87904d91f4f1e7604510a79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb0b33553242716420e430889e4fda82.png)
您最近一年使用:0次
2016-12-04更新
|
692次组卷
|
2卷引用:2017届广东海珠区高三上学期调研测试一数学文试卷
解题方法
3 . 在平面直角坐标系
中,已知圆
,点
在圆
上,且
,则
的最小值是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1b8df651dbb5ef75a6172c67f541c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84cef568cfe2fc12a4dec11533ada274.png)
![](https://img.xkw.com/dksih/QBM/2016/8/24/1572987682922496/1572987688542208/STEM/be76bd3909c4401286aac626c973e94b.png?resizew=67)
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4 . 若
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a101d728309925392e30b7ac4d558b2.png)
![](https://img.xkw.com/dksih/QBM/2016/11/22/1573165365239808/1573165371301888/STEM/6b03dcb744894f99af3753b41d392cca.png)
![](https://img.xkw.com/dksih/QBM/2016/11/22/1573165365239808/1573165371301888/STEM/59dfb32a535540008290520c5193c81b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a101d728309925392e30b7ac4d558b2.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 已知
的外接圆的圆心为
,若
,且
,则
与
的夹角为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce9754538592bb0fa6d128b47bd661ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35579a7643dbd9c7b865ad69f115acf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d792a2aa25763e14cc2863be3887000.png)
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12-13高三上·湖南永州·阶段练习
6 . 已知向量
,满足
,且
,则
与
的夹角为
![](https://img.xkw.com/dksih/QBM/2016/11/3/1573121182359552/1573121188208640/STEM/f6a96ffa5f384b22a1ceb237af6b1ca7.png)
![](https://img.xkw.com/dksih/QBM/2016/11/3/1573121182359552/1573121188208640/STEM/9d5440942c604c8693af6c59b02d1899.png)
![](https://img.xkw.com/dksih/QBM/2016/11/3/1573121182359552/1573121188208640/STEM/daac93d6bad34c53aeb9e5b1b1759ddf.png)
![](https://img.xkw.com/dksih/QBM/2016/11/3/1573121182359552/1573121188208640/STEM/86cfec3e207e417dac786113cbbf4f86.png)
![](https://img.xkw.com/dksih/QBM/2016/11/3/1573121182359552/1573121188208640/STEM/2b5a447b5e6749e0b2a22bb99fdf09bd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 已知向量
设函数
.
(1)求函数
的单调递减区间;
(2)设
分别是
内角
的对边,若
,
,求
的值.
![](https://img.xkw.com/dksih/QBM/2016/11/22/1573165365239808/1573165371588608/STEM/8d77d881ff5f447698b7b62b611e8a3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b48fe291f6f27cee5cb630c2d0bbdfa0.png)
(1)求函数
![](https://img.xkw.com/dksih/QBM/2016/11/22/1573165365239808/1573165371588608/STEM/f322660d153b4a74b79b9716fb52c327.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://img.xkw.com/dksih/QBM/2016/11/22/1573165365239808/1573165371588608/STEM/1aa0882e0ab1492ab56825721e59c1c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baaf592d17cb351997fd3aefc7434333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192dfa7a4e6596b11c738291e571b516.png)
![](https://img.xkw.com/dksih/QBM/2016/11/22/1573165365239808/1573165371588608/STEM/7768d947d7954e63a35a872dad2ca5f5.png)
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8 . 设函数
,其中向量
.
(1)若
且
,求
的值;
(2)若函数
的图象按向量
平移后得到函数
的图象,求实数
的值.
![](https://img.xkw.com/dksih/QBM/2016/11/3/1573121182359552/1573121188495360/STEM/92b4c51c22f94f098b55dd8a55d191fd.png)
![](https://img.xkw.com/dksih/QBM/2016/11/3/1573121182359552/1573121188495360/STEM/f8daf009981a414b8af727337e681b81.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67b51d1e235a1465739b60ba4a62064c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b5f23bd359b40d1410b1883e47710c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e08921a72d608d1618d765569e752a4e.png)
![](https://img.xkw.com/dksih/QBM/2016/11/3/1573121182359552/1573121188495360/STEM/e04d9f5cd1084550bf83fe75ade399f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b29a7faa14a6e09d0db2d04f4ced03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
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9 . 已知tanα=2,则
=
![](https://img.xkw.com/dksih/QBM/2016/4/27/1572605881360384/1572605887037440/STEM/6af4f84eeccd4dedb0c989c7b531eaa9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2261724beb3a55b3b99edf8529542c5.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c6794e953302b610c4aed49c17e0817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2261724beb3a55b3b99edf8529542c5.png)
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