1 . 计算:
(1)
;
(2)
;
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ae97e1a5a463b366693efe86eaaae91.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ca1642465c8401b115660671c14bb4.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f76a0f48e6ed42c110fdc958ac28a8e1.png)
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解题方法
2 . 求值:
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851f208210b3422650daee878da5c1dc.png)
(2)已知角
的顶点与原点O重合,始边与x轴的非负半轴重合,它的终边过点
,求
的值
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851f208210b3422650daee878da5c1dc.png)
(2)已知角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24fee7d3d2e63ade129eae63b27c2bd3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a7ea1ed5f6409e7c4047e30b126448c.png)
您最近一年使用:0次
名校
3 . 计算各式的值:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3789f891278e02e8f409e9cc99a70ca4.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6fdca3c55fb470b24fcc1ada5194476.png)
您最近一年使用:0次
4 . 已知
,
,
.
(1)求
的值;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/447c49a84c33ab016d4666a301608528.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2df1d886444a67202243459763ee10ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b24ddf581f0b540d0d68e171cfab0c4f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c933a0fde595abd7cfa8258d52cdc63b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3286f62051c0c144863158a1a32fe2b7.png)
您最近一年使用:0次
2023-12-23更新
|
536次组卷
|
3卷引用:6.2 空间向量的坐标表示(3)
名校
解题方法
5 . 已知
.求:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca46617da27f0810d09725a34caba4b.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3369fd6ba37be4ca88904ba0654a527.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdbe2bac090c9e1bd56fda73e63b1d87.png)
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6 . 计算
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/272c61203a9b6dab8805e67a0d71ddc9.png)
(2)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/272c61203a9b6dab8805e67a0d71ddc9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/052a93a6b56e8e61b7fa23b9d5030d71.png)
您最近一年使用:0次
7 . 计算下列各式:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf8c36a8da0997187c7ffeee54384589.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceb18c96671ef56fccd8c78e0f8976b9.png)
您最近一年使用:0次
2023-12-22更新
|
126次组卷
|
2卷引用:江苏省青桐鸣大联考2023-2024学年高一上学期12月数学试卷
名校
8 . 随着时代的不断发展,社会对高素质人才的需求不断扩大,我国本科毕业生中考研人数也不断攀升,
年的考研人数是
万人,
年考研人数是
万人.某省统计了该省其中四所大学
年的毕业生人数及考研人数(单位:千人),得到如下表格:
(1)已知
与
具有较强的线性相关关系,求
关于
的线性回归方程
;
(2)假设该省对选择考研的大学生每人发放
万元的补贴.
(i)若该省大学
年毕业生人数为
千人,估计该省要发放多少万元的补贴?
(ii)若A大学的毕业生中小江、小沈选择考研的概率分别为p、2p-1,该省对小江、小沈两人的考研补贴总金额的期望不超过
万元,求p的取值范围.
参考公式:
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/701554763bdbbf2689a8dae07608da38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2400c9dfa94df8bcff641ab611e872f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/151e5633a5d0cc30b254167e3dda5803.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65769ab0ad520766482656d9cd2abc58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d01dd350dc95f42f1883e0cc7aae084.png)
A大学 | B大学 | C大学 | D大学 | |
![]() ![]() | ![]() | ![]() | ![]() | ![]() |
![]() ![]() | ![]() | ![]() | ![]() | ![]() |
(1)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db6103cb0f1d2bd6b19235d53ee7e98.png)
(2)假设该省对选择考研的大学生每人发放
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e5db9fa0bc36e2308bd3eecd5e78351.png)
(i)若该省大学
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d01dd350dc95f42f1883e0cc7aae084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfd121f4aeca8a78a320fca1fd1c4d07.png)
(ii)若A大学的毕业生中小江、小沈选择考研的概率分别为p、2p-1,该省对小江、小沈两人的考研补贴总金额的期望不超过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89e3f457544f1a385e4b60885f0b28d.png)
参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12bf97eb9bdf1fe6a80184f7c13ceaa0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ebff20f21ae41fd8d1f1e3145895842.png)
您最近一年使用:0次
2023-12-21更新
|
1581次组卷
|
6卷引用:江苏省扬州市高邮市2024届高三上学期12月学情调研测试数学试题
江苏省扬州市高邮市2024届高三上学期12月学情调研测试数学试题江苏省镇江市扬中市第二高级中学2024届高三上学期期末模拟数学试卷(二)(已下线)考点16 回归模型 2024届高考数学考点总动员【练】(已下线)第05讲 第八章 成对数据的统计分析 章末重点题型大总结-【帮课堂】2023-2024学年高二数学同步学与练(人教A版2019选择性必修第三册)山东省东营市利津县高级中学2023-2024学年高二下学期3月质量检测数学试题吉林省长春市第五中学2023-2024年高二下学期第二学程数学试题
名校
9 . 求值:
(1)
.
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c10745b6ff2c9542706cd99a214386fe.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f920ea43c617f0880a5b9948af06e474.png)
您最近一年使用:0次
2023高一上·全国·专题练习
10 . 利用和(差)公式,求下列各式的值
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760737dff8d5a65968edef05d83537a7.png)
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86f936d50970cddefa7db9ae36bc4bc.png)
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0846e8e420421c94516b0d5f3eadcfc.png)
(4)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/760737dff8d5a65968edef05d83537a7.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86f936d50970cddefa7db9ae36bc4bc.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0846e8e420421c94516b0d5f3eadcfc.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd90c9ff8a48465550e329fbcbd46c6.png)
您最近一年使用:0次