解题方法
1 . 已知函数
在
上单调增函数,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56e60d05d4b03bc430ad6070ca48c758.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11b481c660bea0673fdd7b31679cab53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020高三·全国·专题练习
解题方法
2 . 已知函数
,若
,则实数x的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ada05145f939faca588265affc233c35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e16907f5dc9de189034c517eb36c311.png)
A.![]() | B.![]() |
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名校
解题方法
3 . 已知函数
.
(1)解不等式
;
(2)记函数
的最大值为
,若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e99fc9c920cad0fd4fab2b56fb18a300.png)
(1)解不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66d61d5f66d68b4c4a2a25fd7103621.png)
(2)记函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9957702b1bc7144e35c21c03f08c236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2dbf610261900b6c0fecafde7c5ad68.png)
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2020-09-05更新
|
236次组卷
|
9卷引用:山西省阳泉市2019-2020学年高三下学期第一次(3月)教学质量检测数学(文)试题
名校
4 . 对命题“
”的否定正确的是 ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a514925a4e2e973c6da9291835eeaa99.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2020-12-22更新
|
125次组卷
|
5卷引用:山西省阳泉市盂县第三中学2021届高三上学期第一次月考数学(理)试题
5 . 已知抛物线
的方程为
,其焦点为
,
为过焦点
的抛物线
的弦,过
,
分别作抛物线的切线
,
,设
,
相交于点
.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a33e5d0dbdd0f15854f0d7dd8b53058.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8516f71467b419293fa27df70bdaed74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a33e5d0dbdd0f15854f0d7dd8b53058.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6706fe00b4e231e62d9ecbec567d526b.png)
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2020-08-06更新
|
202次组卷
|
3卷引用:山西省阳泉市2020届高三下学期第二次质量调研数学(理)试题
山西省阳泉市2020届高三下学期第二次质量调研数学(理)试题(已下线)专题05 平面解析几何——2020年高考真题和模拟题文科数学分项汇编安徽省滁州市定远县育才学校2021-2022学年高二分层班下学期期末文科数学试题
解题方法
6 . 勒洛三角形是具有类似圆的“定宽性”的曲线,它是由德国机械工程专家、机构运动学家勒洛首先发现,其作法是:以等边三角形每个顶点为圆心,以边长为半径,在另两个顶点间作一段弧,三段弧围成的曲边三角形就是勒洛三角形.如图中的两个勒洛三角形,它们所对应的等边三角形的边长比为1:3,若从大的勒洛三角形中随机取一点,则此点取自小勒洛三角形内的概率是( )
![](https://img.xkw.com/dksih/QBM/2020/8/3/2520096770760704/2520810598187008/STEM/a0a51077f1314456a7a27720e23fe3e8.png?resizew=161)
![](https://img.xkw.com/dksih/QBM/2020/8/3/2520096770760704/2520810598187008/STEM/a0a51077f1314456a7a27720e23fe3e8.png?resizew=161)
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7 . 已知对任意平面向量
,把
绕其起点沿逆时针方向旋转
角得到向量
,叫做把点
绕点
逆时针方向旋转
角得到点
.已知平面内点
,点
.把点
绕点
顺时针方向旋转
后得到点
,则点
的坐标是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06704dc348f0a735d68e540f47ca4c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9795e7f5cb9b366776c41d8f3f43942.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28c47514dc018f6ebc777d6fbeaa16ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1dab74e16403e8131f9f5b2a74f3a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77cf5bee8eda1ab58237f8854bd22c45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9955b5aebb73cd84447e8541f901ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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解题方法
8 . 已知数列
中,
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63af91fc49514262e581246dfb72d831.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5c81c886e0a331a1ad7f390d221e167.png)
A.![]() | B.![]() | C.![]() | D.5051 |
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9 . 已知集合
,
,若
,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e08ce327873f44d538f0dd07b5cdc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcd2e1c54c53f7b1a4eff95c396d1bb5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ad78dc8b8aed907b4fe9640c997454.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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10 . 某地区为了组建援鄂抗疫医疗队,现从4名医生,5名护士中选3名医护人员组成一个团队,要求医生、护士都有,则不同的组队方案种数是__________ .
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