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解题方法
1 . 下列命题为假命题的是( )
A.![]() |
B.与![]() ![]() |
C.若![]() ![]() |
D.已知点![]() ![]() ![]() |
您最近一年使用:0次
2022-12-17更新
|
891次组卷
|
2卷引用:海南省海口市第一中学2022-2023学年高一上学期12月检测数学试题
解题方法
2 . 如图,设函数
,
在
内的图象分别为
,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
为曲线
和
的两个交点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/01a9f1de-b0de-4c1d-9ffd-62fef369e567.png?resizew=184)
(1)若
,
,
,求a,b的值;
(2)若
,不等式
恒成立,求m的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7192d87d0fa400d5d7dba57924bbbe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/557eb194cf0abe382609f8e1325b4197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe86cace140f2c3588ab115837bbfc9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84b5f32c09caa0be0d4c33be07aa4530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/01a9f1de-b0de-4c1d-9ffd-62fef369e567.png?resizew=184)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602455251ec7114e2e8f5afcd89d0d5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc218e9622c6f5c09ff45d4dd40043ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59f42933cec4acf2e2a5bde17ea1db4a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44c9ced2a343c4eb166f385c3dbf2217.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55d29e5c6aa6acb282ff3b31d974eff1.png)
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3 . 下列等式恒成立的是( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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4 . 下列说法中正确的是( )
A.全称量词命题“![]() ![]() ![]() ![]() |
B.若函数![]() ![]() ![]() |
C.定义在![]() ![]() |
D.若![]() ![]() |
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2022-12-16更新
|
217次组卷
|
2卷引用:海南省海口中学2022-2023学年高一上学期第二次月考数学试题
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5 . 图1为一种卫星接收天线,其曲面与轴截面的交线为抛物线,如图2,已知该卫星接收天线的口径
米,深度
米,信号处理中心F位于焦点处,以顶点O为坐标原点,建立如图2所示的平面直角坐标系xOy,则该抛物线的方程为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/3c9dc164-06c8-492e-814a-a43155f0048e.png?resizew=280)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42e97eee705d164e6ac6de9ecd6d1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32dc707d3b4e5934397c1e05c5f18e43.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/3c9dc164-06c8-492e-814a-a43155f0048e.png?resizew=280)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-11-17更新
|
651次组卷
|
7卷引用:海南省海口嘉勋高级中学2022-2023学年高二上学期11月期中检测数学试题
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6 . 生活中的建筑模型多与立体几何中的图形有关联,既呈现对称美,也具有稳定性.已知某凉亭的顶部可视为如图所示的正四棱锥
,其所有棱长都为6,且
交于点O,点E在线段
上,且
,则
的重心G到直线
的距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25752e12a73949371215a606a86a3ca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5830322dd2824ed012a68f1a2bd9c742.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-11-16更新
|
432次组卷
|
4卷引用:海南省琼山中学2022-2023学年高二上学期期中考试数学试题
7 . 已知反比例函数
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a15c9d3e50dc0fd6aa1a75b3eb73ca71.png)
A.若点![]() ![]() |
B.当![]() |
C.其图象分别位于第一、三象限 |
D.若点![]() ![]() ![]() ![]() |
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8 . 如图所示,已知抛物线
与
轴交于
、
两点,与
轴交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/12c9eea7-7515-4386-a533-b313b156b81c.png?resizew=159)
(1)求
、
、
三点的坐标.
(2)过
作
交抛物线于点
,求四边形
的面积.
(3)在
轴上方的抛物线上是否存在一点
,过
作
轴点
,使以
、
、
三点为顶点的三角形与
相似.若存在,请求出
点的坐标;否则,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e02c68bc91653f19b8676abb60db91f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fcf9bfbf771cb6118f8e631724314e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/12c9eea7-7515-4386-a533-b313b156b81c.png?resizew=159)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e985a07365d045d935b6098fbf27254.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcc1a89a6a4e99d65b83b4e3ab3ed4eb.png)
(3)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f85e35eeaaf2346c81e7d33df0b6a24e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc3e8a1475b983d1a4295db0e16d4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc3e8a1475b983d1a4295db0e16d4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f91b51acfeef224f2bc25aa83e0878f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a28be4d5a16cf245f6fa7c4088fee4.png)
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解题方法
9 . 一组数:2,1,3,x,7,y,23,…,满足“前两个数依次为a、b,紧随其后的第三个数是
”,例如这组数中的第三个数“3”是由“
”得到的,那么这组数中y表示的数为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59ef576962321d9c8ce237f8ecf7025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7410fdb85fcd32886884f4311db91f81.png)
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10 . (1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e46f7d6f48b612805b5a8e65005f69a0.png)
______ (2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b89a4703064ae9eb239979372d91ceb2.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e46f7d6f48b612805b5a8e65005f69a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b89a4703064ae9eb239979372d91ceb2.png)
您最近一年使用:0次