名校
解题方法
1 . 已知函数
的最小正周期为
.
(1)求
的值;
(2)在锐角
中,角A,B,C所对的边分别为a,b,c.c为
在
上的最大值,再从条件①、条件②、条件③这三个条件中选择一个作为已知,求
的取值范围.条件①:
;条件②:
;条件③:
的面积为S,且
.注:如果选择多个条件分别解答,按第一个条件计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8927608114a249f8acb7da7901fc7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
(2)在锐角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d51992c05a557cf6058664f1f8961e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9f2416d1f75a45a314331146550832e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19dd0c2a4a1107ea28a418a7d281ef5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85b86308eec25f94db0a5e7a58765206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76bf72fe243ab7ba53a1679372f41793.png)
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2卷引用:2024届河北省承德市部分示范高中高三三模数学试题
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解题方法
2 . 如图,在平面四边形ABCD中,E为线段BC的中点,
.
,求AE;
(2)若
,求AE的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b377f22aafd3742ad860f77abaacef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbdb12049c4ca9c62d12c884bbaa9d09.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df54bb4e7febefb181ed69139d76317d.png)
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3 . 若
,则下列大小关系正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2913f8b1ddd63e6bd02a81ffa01eda7.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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3卷引用:河北省沧州市部分高中2024届高三下学期二模考试数学试题
4 . 在锐角
中,
,
,
分别是角
的对边,
.
(1)求
;
(2)若
,求
的面积
取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26844c7324c79fac94d2d2de45a5bd25.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
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5 . 已知函数
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90943f55ade0f0df3038e08cb9c2d371.png)
A.对任意实数![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() |
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6 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ef21808f4ac1ed0d9a965240a984bb.png)
A.![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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解题方法
7 . 若
均为单位向量,且
的取值范围是
,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e12e95f703ad30ab9a3d38376830989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/113182cd4097c56919ec0dfba1d34d68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cc0c199128e763ec28c74aad2148edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f51483d73e902357488f9aa4b14d7b3e.png)
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解题方法
8 . 如图,某市城建部门计划在一块半径为
,圆心角为
的扇形空地AOB内设计一个五边形花境,具体方案设计如下:在圆弧AB上取点P(P与A,B不重合),点M,N分别在半径OA,OB上,且
,
,连接PA,PB,MN,在由
,
,
组成的五边形MNBPA内种植三种花境植物,设
.
的取值范围;
(2)已知
内花境植物种植费用为400元/
,
,
内花境植物种植费用为500元/
,试预测此五边形花境最低造价为多少万元?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/debc8bd8fef0c480e9ad908b7fcde315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49f8a63ddbca52039fa9ab44cda6b29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a69f6a208dd6671c46271b78430d79b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7025b43a8991cf07b35323ee6e042695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbd34b25a45696964c166bbc33585028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35a9ec7088381262f8ca327bd377660.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39ff139f605ee0df463ad9f64089e542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c974c20de0e31685d64e26522969e2f.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1ed4c4e8edbd179f3fc38a6653f18c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c901bcdfa58f0c68ad0161b0bab269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbd34b25a45696964c166bbc33585028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35a9ec7088381262f8ca327bd377660.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35c901bcdfa58f0c68ad0161b0bab269.png)
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解题方法
9 . 设O为坐标原点,定义非零向量
的“相伴函数”为
,向量
称为函数
的“相伴向量”.
(1)已知函数
为向量
的“相伴函数”,若函数
在
上有两个零点,求实数t的取值范围;
(2)在
中,
,向量
的“相伴函数”为
,且
的最大值为
,若点T为
的外心,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/234eb91d6082d883d2c885ddfc629313.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb220ed92f7d51e21483748539ac5a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/234eb91d6082d883d2c885ddfc629313.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb220ed92f7d51e21483748539ac5a6.png)
(1)已知函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eda2329d31764c6873a9f95fa6e76a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a9bdddb904e563d7b7258a17372e561.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5119191a3f07a3930532498a1ea9a0d.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b8f9ec5a2e7b3cb93022fecfec0ac2d.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/c01c11fca112e33a9146dd1e3b73d6a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65f1236d667f75a5e0b8a04fbc4e8bbd.png)
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10 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e1650e22601527e9f3d31c5d844ab2.png)
A.![]() ![]() |
B.函数![]() ![]() |
C.直线![]() ![]() |
D.函数![]() ![]() |
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2卷引用:河北省张家口市张北成龙高级中学2023-2024学年高一下学期3月阶段测试数学试题