1 . 设D是
边
延长线上一点,记
.方程
,若在
上方程恰有两解,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c27ec02c42f8f63bb6644353d1a9b218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c7dee313ce741d3e7ea1c3b31060df5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2e950e8a7181cb37bbddc6010fd87a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
2 . 已知
,则
的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c48f1903a478c4f25b2a3651b09fb113.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/983dfab91b61c0617af944397d645ecc.png)
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9-10高三·辽宁本溪·假期作业
真题
名校
3 . 当
时,函数
的最小值是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b52c3049a6fa96b0ed1f3b6f6528a2ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae1de3b1babb5f6f37fd2c4abe973bb9.png)
A.![]() | B.![]() | C.![]() | D.4 |
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2016-11-30更新
|
1777次组卷
|
11卷引用:江苏省徐州市贾汪中学2020-2022学年高一下学期春季竞赛数学试题
江苏省徐州市贾汪中学2020-2022学年高一下学期春季竞赛数学试题第六届高一试题(决赛)-“枫叶新希望杯”全国数学大赛真题解析(高中版)(已下线)2011届本溪县高三暑期补课阶段考试数学卷(已下线)2011届江西省莲塘一中高三习题精编(7)2015-2016学年辽宁沈阳东北育才学校高二上学期第一次作业数学试卷辽宁省大连市第八中学2016-2017学年高一下学期期中考试数学试题山西省大同市第一中学2019-2020学年高二下学期3月网上考试数学(理)试题山西省大同市第一中学2019-2020学年高二下学期3月网上考试数学(文)试题7.2.2同角三角函数关系-2021-2022学年高一数学链接教材精准变式练(苏教版2019必修第一册)2004 年普通高等学校招生考试数学试题(广东卷)内蒙古自治区赤峰第四中学2020-2021学年高一下学期第二次月考理科数学试题
4 . 由单摆实验得到如图所示曲线,现用正弦函数模型
来拟合,其中
.已知
,则在实数范围内
的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e115f70dedd6eb3739913849679b8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb2d7841114daf4fd38e14e2d2b591c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dff761780a5cacea697eead555a112b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354e0fcc5ce9a3446aeef0eb9a1d3c24.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/24/45f9fd9b-67fc-4017-afac-16f11fe19983.png?resizew=148)
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5 . 已知函数
的最小值为-6,则实数a的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d55f9b9a59a2ae35afcd3309862ce8e.png)
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解题方法
6 . 在平面四边形
中,如果
,且
,那么
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d8f3dd57aafc8d6d0359c9b61e616bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/029efb8b2d1490a194c1d67b57b4f422.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a779e711b3900db89bd868360dcfaa.png)
A.2 | B.3 | C.4 | D.5 |
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名校
7 . 设
,
为锐角,且满足
,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/125ac9f5180279264c95cfb2e7c410f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9fcaa804011c37873b03ee284504fe.png)
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2020-01-19更新
|
653次组卷
|
2卷引用:全国高中数学联赛模拟试题(三)
名校
8 . 若锐角
满足
,则角
的度数为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d041f450946b8bdb0a2c29d23986add0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
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9 . 已知
,满足
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22c2710ccbb5ea6f98dd3470cacaf626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55f8b9c86cb1d9975a2ffe4bc4629aef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
10 . 已知三个非零的平面向量
,
,
,满足
,
,
.
(1)若
,且
,求
的值;
(2)求
的最小值.
![](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/bb573cc0f30d5c32cdad1510793f0e7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ffee6e116b805c3e8677530ae95e4db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30e0411d830bf0e627c99bc473cad1e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85d8f79db7abccfb1be99097b8b19178.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb8ed66de4dba65ef7a2b03612185fa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78898b639cbf026b74ecbed742eae7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f20d0c1dc57448d555883da8f1e885f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ffc403ded5faedb326b83d5d3f69a30.png)
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