名校
解题方法
1 . 现有如下命题:①若
的展开式中含有常数项,且
的最小值为
;②
;③若有一个不透明的袋子内装有大小、质量相同的
个小球,其中红球有
个,白球有
个,每次取一个,取后放回,连续取三次,设随机变量
表示取出白球的次数,则
;④若定义在R上的函数
满足
,则
的最小正周期为
;
则正确论断有______________ .(填写序号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5008d9c9df01d9572b60fa8dcbf9e296.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b26bd51455e1ff6d911412e15365da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c92278194f93b54876e6b319995f5a37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59055ec73e9a9710e18fd73dbdd2ca07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d78dec1c1e00ec02d7bdaf76ef8901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
则正确论断有
您最近一年使用:0次
2020-06-23更新
|
412次组卷
|
2卷引用:四川省绵阳中学2023届高三适应性考试(二)理科数学试题
名校
2 .
的展开式中,
的系数是___ .(用数字填写答案)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f171093b7e660afe4186c2731e2781f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2af9764aa29ce1378f9c6f6c3ceea928.png)
您最近一年使用:0次
2018-07-07更新
|
489次组卷
|
4卷引用:四川省南充市阆中中学2018-2019学年高二6月月考数学(理)试题
名校
3 .
展开式中的常数项为__________ .(用数字填写答案)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32310f740ea7679b75874464ea4b6d4b.png)
您最近一年使用:0次
2018-05-09更新
|
527次组卷
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2卷引用:四川省叙州区第二中学2019-2020学年高二下学期期末模拟考试数学(理)试题
真题
名校
4 .
的展开式中,x5的系数是_________ .(用数字填写答案)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd24bc92e5045a8f80025f6d00f81391.png)
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2017-04-15更新
|
556次组卷
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6卷引用:四川省宜宾市叙州区第一中学校2022-2023学年高二下学期期中理科数学试题
名校
解题方法
5 . 椭圆规是画椭圆的一种工具,如图1所示,在十字形滑槽上各有一个活动滑标
,
,有一根旋杆将两个滑标成一体,
,
为旋杆上的一点且在
,
两点之间,且
,当滑标
在滑槽
内做往复运动,滑标
在滑槽
内随之运动时,将笔尖放置于
处可画出椭圆,记该椭圆为
.如图2所示,设
与
交于点
,以
所在的直线为
轴,以
所在的直线为
轴,建立平面直角坐标系.则椭圆
的普通方程为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e00ad067ceaf3a8c0452e5cd52a506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d17663aeb7b7594a6b3af7d1538bb750.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/8ec20cdb-37a3-464e-a4ec-f4b67843bf45.png?resizew=402)
您最近一年使用:0次
2020-08-16更新
|
732次组卷
|
4卷引用:四川省绵阳南山中学2022-2023学年高二上学期期末数学试题
四川省绵阳南山中学2022-2023学年高二上学期期末数学试题陕西省西安市西北工业大学附属中学2019-2020学年高二下学期5月月考数学(理)试题(已下线)【新教材精创】2.5.2+椭圆的几何性质(1)-B提高练-人教B版高中数学选择性必修第一册新疆生产建设兵团第六师五家渠高级中学2022-2023学年高二下学期开学考试数学试题
10-11高三上·四川乐山·阶段练习
6 . 某校为了了解高三学生的身体状况,抽取了
名女生,测量其体重.将所得的数据整理后,画出了如图所示的频率分布直方图,则所抽取的女生中体重在
的人数是______
![](https://img.xkw.com/dksih/QBM/2014/3/17/1571567170043904/1571567175630848/STEM/4291a34a979742e994ecc32a30a3ad72.png?resizew=223)
![](https://img.xkw.com/dksih/QBM/2014/3/17/1571567170043904/1571567175630848/STEM/bdd7a3a957f246db982155bf6ee9cf07.png?resizew=27)
![](https://img.xkw.com/dksih/QBM/2014/3/17/1571567170043904/1571567175630848/STEM/1a206b8467c84e9fb30c5b754a861720.png?resizew=69)
![](https://img.xkw.com/dksih/QBM/2014/3/17/1571567170043904/1571567175630848/STEM/4291a34a979742e994ecc32a30a3ad72.png?resizew=223)
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