解题方法
1 . 下列等式中成立的有( )
A.![]() |
B.![]() |
C.![]() |
D.![]() |
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名校
2 . 如果函数
满足:当a,b,c是一个三角形的三边长,且
都存在时,
也是某个三角形的三边长,那么就称
具有“性质P”,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b4db74fcf367ea0cd1e6ff95fed441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b4db74fcf367ea0cd1e6ff95fed441.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
A.![]() |
B.![]() |
C.当![]() |
D.当![]() ![]() |
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2023-04-06更新
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394次组卷
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3卷引用:2018年清华大学自主招生暨领军计划数学试题
3 .
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eb3bd6eb4d4e07d7f758f12c928024c.png)
A.![]() | B.![]() | C.![]() | D.前三个答案都不对 |
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解题方法
4 . 若锐角
内角
、
、
的对边分别为
、
、
,
,面积
满足
,则
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2af4582d813f9d5e426bf1b1613d973.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c13d4d91046d6cef4258c09c40c8567f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d2d7ddd7ef3b6cde30018bc6a84b9e0.png)
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解题方法
5 . 定义运算
,
,
,若
,
,则平面区域
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcce2ee1aded3582e48901cb947b8dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d703708ff72790bb95bd941a40c9bf16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be4830993198a70b45c3f2fdfaec4732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20e165c88aaecc1b6f14aa90a7cf2666.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1f33b3e70ac0fbde45cf4113308ac6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f01841f750224f4592ab124d55601d53.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 已知同一平面内的单位向量
,
,
,则
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b28baf17059c56ee9ad1ae4814acd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b04618e5b2db68f2de6ba68972c505c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/decd249634d157b89dd35ece5d3ceea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32f791072b02715d833eb4f093d48b6.png)
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2020-07-09更新
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1853次组卷
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4卷引用:浙江省湖州市2019-2020学年高二下学期期末数学试题
浙江省湖州市2019-2020学年高二下学期期末数学试题(已下线)2022年高考浙江数学高考真题变式题7-9题(已下线)2022年高考浙江数学高考真题变式题16-18题新疆喀什市喀什大学附属中学2023-2024学年高一下学期3月月考数学试题
7 . 设函数
,
是公差为
的等差数列,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ed564827ca1f759c52be748130fc4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a857ad3c48a3955e0d967010815ca444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4be2164a2c67d6163faee87a10942bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c487fec20bd809e0baf5cb39afe8979.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85cc765cc435b0cf34eb794374f89df4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ed564827ca1f759c52be748130fc4c2.png)
A.0 | B.![]() | C.![]() | D.![]() |
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解题方法
8 . 已知函数
.
(1)若
为锐角,
,
,求
及
的值;
(2)函数
,若对任意
都有
恒成立,求实数
的最大值;
(3)已知
,
,求
及
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/368c73c5b1fc66954165a11ebd9bba5e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b954d1f9144e173c0c5d0ad7ad9eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db73deb6fa502e49e3c873ef076fbc32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6f90c4754e6b6fc862d72943fb35569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dfec7685088a43a76b6047832eb06ca.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1d03f668e16e4ae8527e3ee741eaa99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34678cf07a992840399ea3bdcdc40b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/928914a3d54b81e071af1b5bcf35d149.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15100cab0a8f1fb3a2668fb0d20ef38f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
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2020-05-25更新
|
1273次组卷
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3卷引用:江苏省无锡市天一中学2019-2020学年高一下学期期中数学试题
江苏省无锡市天一中学2019-2020学年高一下学期期中数学试题(已下线)专题20 三角函数中的压轴题(二)-【尖子生专用】2021-2022学年高一数学考点培优训练(人教A版2019必修第一册)江苏省南京师范大学附属中学江宁分校2021-2022学年高一下学期期中数学试题
9 . 在复平面内,设
为坐标原点,点
所对应的复数分别为
,且
的辐角主值分别为
,模长均为1.若
的重心
对应的复数为
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d860cb86e1467ac24010aecfc7a425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d860cb86e1467ac24010aecfc7a425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9baca3aafb52803b02ba8b2604e0827c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e673f7e66c2a252da4c77c70d90c8cec.png)
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2020-03-01更新
|
1015次组卷
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2卷引用:人教A版(2019) 必修第二册 突围者 第七章 第三节 课时1 复数的三角表示式
名校
解题方法
10 . 在
中,角
、
、
所对的边分别为
、
、
,若
为锐角三角形,且满足
,则
的取值范围是_______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c85a40518b5652906fc162f6b43f84b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be772b51d3eb60305b5f65e756cdd418.png)
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2020-02-29更新
|
1106次组卷
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2卷引用:江苏省泰州中学2018-2019学年高一下学期期中数学试题