名校
解题方法
1 . 若
,
,
,则下列不等式对一切满足条件的
,
恒成立的是______ (写出所有正确不等式的编号).①
;②
;③
;④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7dbc702617c765a573961953cc0901.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/8564d76ca5357c0f6237e48086d23f75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ed2296215d64f2df2cedc608a10dc61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ec307143b4bf45106369f256a796d61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87f74ed01523c6de67b01c24bfe52b6c.png)
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2021-11-28更新
|
280次组卷
|
2卷引用:黑龙江省佳木斯市第八中学2022届高三上学期期末数学(文)试题
20-21高三下·浙江·阶段练习
解题方法
2 . 已知非零向量
的夹角为
,若存在两不相等的正实数
,使得
,则
的取值范围为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8ccba3b87a8a48ac3dd5f72d00bdb1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0d491ca1d69c14de489ec68aa280c97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00df1b3f0018e39f28c3c8e6325ab4c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce2efd1ca680d9c807725f8f72ff8a93.png)
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名校
3 . 已知直线
分别与函数
和
的图象交于点
,现给出下述结论:①
;②
;③
;④
.则其中正确的结论序号是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/501a6d50c937729c8d0f02b2b62a0ee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f2eff609c6043c2a89a6dd163fe2244.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12be206d66e65eb92ef08bad8cd8f71d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c40baffcb91c4d6a69f86a6b6bc5672.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/419504736c4934f6e0df4114c3743944.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f700e9e84ec901bf75313a29757740fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05c6510c0a13618cb9cad14172480c45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f76409bffa66c2157ea8bac43cede7.png)
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2020-12-26更新
|
472次组卷
|
3卷引用:江西省宜春中学、万载中学、樟树中学2021届高三上学期第一次联考数学理科试题
2020高三·全国·专题练习
解题方法
4 . 在
中,若
,
,
成等差数列,
,则当
取最大值时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c13fadefec9d4bad9149b6d5cd3e0e.png)
___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cb9b2c493c122d51675bd79db35e5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/138fe831e5da0d0ca48619e8f34b2a4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c160695f2bcac2657ea19e61b560f6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febc9a89d0d1c97b88c0f4acd32b4e67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c13fadefec9d4bad9149b6d5cd3e0e.png)
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解题方法
5 . 已知
,则
与
的大小关系是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b80dc1048e670f72c0c9fc7b10203a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af2820e6e888da175da63fb59e0990c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454f2f01ef64932b75114500a50ba0f4.png)
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6 . 在
,
的情况下,下面四个结论:
①
;
②
;
③
;
④
.
其中正确的是___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da880fccd5490abf574da77da9e04a59.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d702d8b5a3199747bf9700d536cebb1.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb2e31608320e989afeeed9a7a8482d.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/353a0504082335c98b71653317beabbe.png)
其中正确的是
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7 . 已知平面向量
,
,
满足
,
,
,则
的最大值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/969604545902c9a66549a4a44ec3a3c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab17fd4247cdd710c363d5d3fbc5bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c308ea87b699ee1dcb879a568899de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7143c24a0f6abee7f14a3f1a8ddbb467.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfc0de16bdd7237d6e171e35b4366f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112dd2b434798d6e25dc6afc608061f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bae51bb46847e0653b83ab564ac4533.png)
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名校
解题方法
8 . 已知锐角
中,
所对的边分别为a,b,c,且满足
,则
面积的最大值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9c1e84aaa7e1b5c1283075b36c72fb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fd2890a5b78079a5cdf9cbe1ed3c3b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
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9 . 在正方形
中,
分别是边
上的两个动点,且
,则
的取值范围是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02f58ebcf9978ea2082c2edec204fb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/481e426224c3a3ce9bb5a731eed81c40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/056c2272e0d10d6dd9706e6324d8e62d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3c34414e65788c8605c35890188248c.png)
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2020-01-11更新
|
307次组卷
|
2卷引用:2017年上海市浦东新区高三12月教学质量检测(一模)数学试题
10 . 已知正实数
满足
,则
的最小值为________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1929224b1553ad78f66128c60fc04a80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd98ce07e05c58d83a48d90dfcb28fd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316ff232fac9a12299e74cf205ea1a43.png)
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2018-11-18更新
|
2604次组卷
|
5卷引用:江苏省徐州市2019届高三上学期期中质量抽测数学试题
江苏省徐州市2019届高三上学期期中质量抽测数学试题【市级联考】江苏省海安市2018-2019学年高二下学期第一次阶段性检测数学试题人教A版(2019) 必修第一册 突围者 第二章 第二节 基本不等式(已下线)2.2.4+第2课时+均值不等式的应用(课后作业,)-新教材2020-2021学年高一数学同步备课(人教B版必修第一册)第二章 等式与不等式 2.2 不等式 2.2.3均值不等式及其应用