1 . 已知
,
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7183d0b90c83baf20de399ca0f3b4fe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc77736082d40a73a6738e0ac815766.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f045fddc2f02557913c502433327847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070d1ea22a92808dad7489438c239629.png)
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2 . 函数
(
且
)的图象过定点_________ .直线
的倾斜角为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d982f5a0c011f75ecbace7ae1cae7d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b22a292c25bf81dff2bb6d211b492aa4.png)
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3 . 将正偶数按如下所示的规律排列:
2
4 6 8
10 12 14 16 18
20 22 24 26 28 30 32
……
则数字2024的位置为第__________ 行,从左向右第___________ 个数.
2
4 6 8
10 12 14 16 18
20 22 24 26 28 30 32
……
则数字2024的位置为第
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2023-11-27更新
|
335次组卷
|
3卷引用:黑龙江省哈尔滨市第九中学校2023-2024学年高二上学期期末考试数学试卷
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4 . 已知
,
,且
,则
的最小值为______ ,此时![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03699cf3aa154fd75501ae7388d2539c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b0113fd4c7d157757571f9a009e02af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892560dcff6af9f66a3f735652f69dd7.png)
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2023-08-25更新
|
179次组卷
|
3卷引用:黑龙江省牡丹江市第二高级中学2023-2024学年高三上学期第一次阶段性考试数学试题
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解题方法
5 . 已知某批零件的长度误差
服从正态分布
,其密度函数
的曲线如图所示,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba61d4d157df174c22cbc12d2495cad.png)
_____ ;从中随机取一件,其长度误差落在
内的概率约为_________ . (附:若随机变量
服从正态分布
,则
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bcc248a7770a16fa10fc4602d71e0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab2aff4d6a2ab5efcc62bb2bcf773ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aba61d4d157df174c22cbc12d2495cad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe0aa6817a006f28c662db0652e2932.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b734e8f1546481e3eb4976008a045de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bcc248a7770a16fa10fc4602d71e0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09e0ceef60984328e65e242978afc31d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea41bb4071dbf8dfd0f4419b471205fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/499783032003307d45f686c557159e6f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/21/c3614706-5629-4545-ab1c-bc1a819ffc2f.png?resizew=282)
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6 . 某中学共有学生600人,其中男生400人,女生200人.为了获得该校全体学生的身高信息,采用男、女按比例分配的分层随机抽样的方法抽取样本,并观测样本的指标值(单位:cm),经计算得到男生样本的均值为170,方差为18,女生样本的均值为161,方差为30.根据以上数据,估计该校全体学生身高的均值为________ ;估计该校全体学生身高的方差为________ .
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2023-07-08更新
|
768次组卷
|
2卷引用:黑龙江省“六校联盟”2023-2024学年高三下学期联合性适应测试数学试题
7 . 若数列{
}的前n项和为
,则
=______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee3e1619fc8f1dd4593039256c55596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/010a9ae3c4c9d3d0a2ad40ce15e98dba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
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8 . 已知
的展开式中第4项与第5项的二项式系数之比是
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
______ ,展开式的常数项为______ .(用数字作答)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f050be3ad46df6eb81ec95b14bab9f84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff4806fb7f95f63e863c287faa51f8e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3cb8d72bb2e281b943b3b430138ef7.png)
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9 . 某校学生积极参加社团活动,高一年级共有
名学生,其中参加合唱社团的学生有
名,参加科技社团的学生有
名(并非每个学生必须参加某个社团).在高一年级的学生中,同时参加合唱社团和科技社团的最多有_______ 名学生,最少有__________ 名学生.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efba7147f5b9ced8bc4a72f0a9fb8af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95e04c0835219e5773af2a3ba7c3d725.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86608326541db75771f5de9db6187e6d.png)
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10 . 若集合
其中
为实数.
(1)若
是
的充要条件,则
=______ ;
(2)若
是
的充分不必要条件,则
的取值范围可以选择下列哪些序号______ .①
②
③
④
⑤
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7cf70c5a8454a1d5a202434fb367cb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(1)若
![](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/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若
![](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/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/879234adbae93aa72b7e101b3738d4e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51ef7bea32c1bda133469b58b2fcbfc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/870ebc2f7aabb028024894568d749934.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d11ea1c8c1a7e550f1a2b85bd98a8e5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb2852c41419c078554e584d2fc2577f.png)
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2022-12-18更新
|
180次组卷
|
3卷引用:黑龙江哈尔滨市第一二二中学校2021-2022学年高二下学期期末数学试题
黑龙江哈尔滨市第一二二中学校2021-2022学年高二下学期期末数学试题黑龙江省齐齐哈尔三立高中2022-2023学年高二下学期期初考试数学试题(已下线)模块四 专题3 题型突破篇 小题满分挑战练(1)