1 . 已知平面向量
、
的夹角为
,且
,则
的最大值是_____ .
![](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/3e3b9a20c31e397ae1dc8a44baf7de91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98a268b99842456d3af045077b88b9a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbcc1baef32a6746c299f28d340bdd39.png)
您最近一年使用:0次
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解题方法
2 . 已知锐角
,
满足条件:
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9fcaa804011c37873b03ee284504fe.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a6337b8bc0ebf65c56369c59599330c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9fcaa804011c37873b03ee284504fe.png)
您最近一年使用:0次
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3 .
中,
为
的中点,
为外心,点
满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/7830e6e7-c859-4f0c-aa4c-7843b4717647.png?resizew=153)
(1)证明:
;
(2)若
,设
与
相交于点
,
关于点
对称,且
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb86591bf1a53380dba87fb1acb599b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/7830e6e7-c859-4f0c-aa4c-7843b4717647.png?resizew=153)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e4d77ea39d864063a5d424ade3bbb31.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcadc2a2269b71c60e7b0cb0ec04ce3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7da2da104aebadf212b40dbcd41aaaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeddf13dd13f99fb75445f44f4fc29fe.png)
您最近一年使用:0次
2020-02-24更新
|
1783次组卷
|
2卷引用:浙江省温州市2019-2020学年高一上学期期末数学试题(A)
名校
4 . 如图,已知正四棱锥
可绕着
任意旋转,
平面
.若
,
,则正四棱锥
在面
内的投影面积的取值范围是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebfcf34539673d516eb9b259951a81ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecaf8d068559d90824eb43b9c252a320.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79d60a122ad99b54f0ef19e2d38551a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebfcf34539673d516eb9b259951a81ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/d4a0100f-70d9-4bc5-81a7-cefb2401f6a1.png?resizew=184)
您最近一年使用:0次
解题方法
5 . 已知函数
的最大值和最小值分别是
,则
为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0759228d98fff66ae6f474d534618437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de21fd458d5a559e1822dcb33862c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b5c47f301e0ea5d6279e3fe5ca01f1.png)
A.1 | B.2 | C.-1 | D.-2 |
您最近一年使用:0次
2016-12-03更新
|
1279次组卷
|
3卷引用:2015届浙江省金华十校高三下学期高考模拟(4月)文科数学试卷
名校
6 . 设向量
,
,其中
,
,
为实数.
(1)若
,求
的最小值;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/470955e0ba462ec27e4ecf289d0e26af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7b6222f2dff66ce212acaf92119af3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0acaaff6f066b088455b1c8610650fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602d32c271f3c70a3cff9ad6422c69b7.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9412f10b1db89bd924ad7beadc83331b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/706e9acb62e73fac4c23fdbbd8a41a0d.png)
您最近一年使用:0次
2016-12-03更新
|
2169次组卷
|
5卷引用:2015届浙江省高三第一次五校联考文科数学试卷
13-14高二·浙江嘉兴·假期作业
名校
7 . 已知函数
的最大值为
.
(1)求常数
的值;
(2)求函数
的单调递增区间;
(3)若将
的图象向左平移
个单位,得到函数
的图象,求函数
在区间
上的最大值和最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fd1c57b4a3844f9ab51dcaf02d7fb6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(1)求常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b77857e15ae11fc94a5e33bfc12d26.png)
您最近一年使用:0次
2016-12-03更新
|
3486次组卷
|
7卷引用:2014-2015学年浙江省嘉兴市第一中学高二暑假作业检测数学试卷
(已下线)2014-2015学年浙江省嘉兴市第一中学高二暑假作业检测数学试卷(已下线)2015届黑龙江省哈尔滨市六中高三上学期期中考试理科数学试卷2015届宁夏银川一中高三第四次月考理科数学试卷山西省晋城一中2017--2018学年度高二12月月月考数学文试题【全国百强校】黑龙江省双鸭山市第一中学2019届高三上学期第一次月考数学(理)试题辽宁省营口市第二高级中学2021-2022学年高三上学期第一次月考数学试题湖南省邵阳市邵东市第一中学2022-2023学年高二上学期第一次月考数学试题