1 . 已知方程组
,问
在什么范围内取值时,方程组的解集:(1)只含有一个元素;(2)含有两个元素;(3)空集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1a2390db7eecb5c84b76bd2e26846eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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名校
2 . 若关于
的不等式
的解集为
,
的解集为
.
(1)试求
和
;
(2)是否存在实数
,使得
?若存在,求
的范围;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374d5551b9e7ca9734d0d13301d8001a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/702d9438cd5abb9efc10b661d8732882.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)试求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95321d0e551daa25104d32157249c23d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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3 . 若关于x的不等式
的解集是
,则实数m的取值是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4575cd0117c84640f95b3f94d96f5505.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0c071e335f27b3354bf6813f003482.png)
A.1 | B.-1 | C.1或-1 | D.0 |
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名校
解题方法
4 . 在①
;②
;③设
的面积为
,且
.这三个条件中任选一个,补充在下面的横线上.并加以解答.
在
中,角
,
,
的对边分别为
,
,
,且_____,
.
(1)若
,求
的面积;
(2)求
周长的范围
(3)若
为锐角三角形,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bdd31043c300b09b096b518729cb7e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f707216c0d2cd7d2c7ec788cd67fce4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/301d953141af3ccb5538af3e6471ea55.png)
在
![](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/6129fbf40a950fc8c516f0abaab21957.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9be4380bdcef1c542604a6ad61642c0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd950ec83d93596468e3aff0bb91e0e9.png)
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2024-04-24更新
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1222次组卷
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4卷引用:江苏省无锡市江阴市两校联考2023-2024学年高一下学期4月期中考试数学试题
江苏省无锡市江阴市两校联考2023-2024学年高一下学期4月期中考试数学试题江苏高一专题05解三角形(第二部分)吉林省白山市抚松县第一中学2023-2024学年高一下学期5月期中考试数学试题(已下线)专题03 解三角形(2)-期末考点大串讲(苏教版(2019))
名校
5 . 已知集合A={x|x2﹣2x﹣3≤0},B={x|x2﹣2mx+m2﹣4≤0,x∈R,m∈R}.
(1)若A∪B=A,求实数m的取值;
(2)若A∩B={x|0≤x≤3},求实数m的值;
(3)若A⊆
,求实数m的取值范围.
(1)若A∪B=A,求实数m的取值;
(2)若A∩B={x|0≤x≤3},求实数m的值;
(3)若A⊆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f1354e5af47bfe0690db58867f493b1.png)
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2020-01-21更新
|
349次组卷
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2卷引用:吉林省长春市十一高中、白城一中2017-2018学年高一上学期第一次月考联考数学试题
名校
解题方法
6 . 已知向量
,
,设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/053d40610c39e4ffca665bf4206cfa29.png)
(1)若
,求
的所有取值;
(2)已知锐角
三内角
,
,
所对的边分别为
,
,
,若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa74231b6b7acd78f0a621961f11ac0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/346f9fa481695c3272cdbc08d3db265f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/053d40610c39e4ffca665bf4206cfa29.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c9e57f9051895c43eb87215f444a8bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)已知锐角
![](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/8477c9237d6d23fcdd6a6ff35ca7aa25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e3d87be9f706832ef25537d78a201b.png)
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7 . 设
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369dd3ff5cc1dea0949d0a538e3cdebb.png)
,记
.
(1)若
,
,当
时,求
的最大值;
(2)若
,
,且方程![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d533c2927bf8b0de9dd6fe3659f59e72.png)
有两个不相等的实根
、
,求
的取值范围;
(3)若
,
,
,且a、b、c是三角形的三边长,试求满足等式:
有解的最大的x的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f33b53f9075962e636fd8a92a71a71f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369dd3ff5cc1dea0949d0a538e3cdebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49ad943df3f041566c76f1a3b1513852.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca4be345087f993a4078e16c16608e2.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4bb053ba9f2751c97b3dc4c1898080b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4880034fc9384ba2c267747628ec8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/538193a4717d564c01145e82314c2d1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d533c2927bf8b0de9dd6fe3659f59e72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee2ed12bdfda0c5bfff863f6da53cfec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1019d4ad2e3fb4a7abb66e0e9e55b556.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81eedd077b507f134c97a79293190a9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87d10a32f013100f9a42d8a88d7fb222.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca4be345087f993a4078e16c16608e2.png)
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2020-01-15更新
|
206次组卷
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2卷引用:上海市七宝中学2017-2018学年高三上学期10月月考数学试题
名校
8 . (1)对一切正整数
,不等式
恒成立,求实数
的取值范围构成的集合.
(2)已知
都是正实数,且
,求
的最小值及相应的
的取值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c6489fd62b55ca837e35a3224c44c6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95f451172458110032801ad7e3e68c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f29d5f376c75c41ae6af0c8a8565449.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0fffbec1fe851795dfdd448bf0d165.png)
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2019-06-17更新
|
571次组卷
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2卷引用:广西南宁市第三中学2018-2019学年高一下学期第三次月考数学试题
名校
解题方法
9 . 若关于
的不等式
的解集为
,则实数
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a83b772fa451462a580bdf7a81ffcb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac87434324956e4145e38ad92a1aa95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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7日内更新
|
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2卷引用:安徽省亳州市利辛高级中学2023-2024学年高一上学期期末教学质量检测数学试题
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10 . 已知函数
,不等式
的解集是
.
(1)求
的解析式;
(2)若存在
,使得不等式
有解,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3a85b84489c65e62df7bd003c7bc4c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c73a98c1b3504e09bfbe0db849b0d24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c76c41773aae617db1c0cc04bcf836f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1591d4244dcf5539a4ae98f554e91e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e0ee17e878be546cf24f503aef898db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
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2024-01-22更新
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5卷引用:广东省清远市2023-2024学年高一上学期期末教学质量检测数学试卷