1 . 化简与计算
(1)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b7baf0fbf122c5b59a4eb0040043dc.png)
(2)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac9888f1d00eaf6bcbf7659359beb589.png)
(3)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707889c82744df97982f9d8250e85d4f.png)
(4)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e708f9565c0143cbea0b3492d6c91ded.png)
(5)![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d308d9172c4655e5a081861122ee19.png)
(6)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b7baf0fbf122c5b59a4eb0040043dc.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac9888f1d00eaf6bcbf7659359beb589.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707889c82744df97982f9d8250e85d4f.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e708f9565c0143cbea0b3492d6c91ded.png)
(5)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d308d9172c4655e5a081861122ee19.png)
(6)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d72fa7243554cd7f8885d783b1f736.png)
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2 . 新源县某高中有三个重点班,分别为A班40人,B班36人,C班有25人.现从三个班各选一人参加一项活动,则不同的选法有______ 种.(以数字作答)
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名校
3 . 如图,已知圆O的面积为
,AB为直径,弧AC的度数(劣弧AC所对圆心角的度数)为
,弧BD的度数为
,点P为直径AB上任一点,则
的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14c055a02fba0827ffcaa92f73ce7720.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/391479c151307826c9765a47a5f10503.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aee6e4e9350a2665df8597ff8045bbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/186dee1a1cf68677d143172a2a50709c.png)
![](https://img.xkw.com/dksih/QBM/2021/9/22/2813365822922752/2814982063136768/STEM/671374264e384426aca60ee9990eecb5.png?resizew=215)
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2021-09-24更新
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174次组卷
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3卷引用:新疆疏附县第二中学2021-2022学年高一上学期开学考试数学试题
新疆疏附县第二中学2021-2022学年高一上学期开学考试数学试题上海交通大学附属中学2021-2022学年高一上学期开学摸底数学试题(已下线)高一数学上学期开学分班考试卷(沪教版2020)-2022-2023学年高一数学考试满分全攻略(沪教版2020必修第一册)
名校
4 . 如图,点C是线段AB上的一点,分别以AC、BC为边在AB的同侧作正方形ACDE和正方形CBFG,连接EG、BG、BE,当
时,
的面积记为
;当
时,
的面积记为
,……,以此类推,当
时,
的面积记为
,则
的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20227c155003de7163d407daf0a5e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20227c155003de7163d407daf0a5e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/890aea25780f7ba34adb23e799808462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d20227c155003de7163d407daf0a5e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe3373f7bcdfcd1223ffd12700c5285.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/9/89abe346-f89d-4657-a4b0-de567129e6d7.png?resizew=175)
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2卷引用:新疆疏附县第二中学2021-2022学年高一上学期开学考试数学试题
5 . 如图,在四边形
中,
,
,动点
从
开始沿
边向
点以
的速度运动,动点
从点
开始沿
向
点以
的速度运动,
,
分别从点
,
同时出发,当其中一点到达终点时,另一点也随之停止运动,运动的时间为
秒.
![](https://img.xkw.com/dksih/QBM/2021/9/15/2808765401153536/2810832115703808/STEM/5342823a55174dc788246509316798a3.png?resizew=230)
(1)
为何值时,四边形
为矩形?
(2)
为何值时,四边形
为平行四边形?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21e0f88eb08617a47678fee9f70ba70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bfb8fd7ceba575602e6cdaacf2b5713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b9174c3b1324cf81098e42e0480bcc8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79789686104cab147c239d152271e076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://img.xkw.com/dksih/QBM/2021/9/15/2808765401153536/2810832115703808/STEM/5342823a55174dc788246509316798a3.png?resizew=230)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dd74d529f994ca8e67630f774a639b.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5c203fa789096869f098e7b024dae26.png)
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2021-09-18更新
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2卷引用:新疆疏附县第二中学2021-2022学年高一上学期开学考试数学试题
名校
6 . 曲线
(
为参数)与
坐标轴的交点是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ac98595ffe93cf369bce756ecf93623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
A.![]() | B.![]() | C.![]() | D.(0,﹣4) |
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7 . 下面是小明同学利用三段论模式给出的一个推理过程:①若
是等比数列,则
是等比数列(大前提),②若
,则数列
是等比数列(小前提),③所以数列
是等比数列(结论),以上推理( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa0dc13236eaa2bd0cdc0f24beea11fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a69c1aa2f076433b0aa43eb28642b71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17c795556771753fb4a5f54475e37ed3.png)
A.结论正确 | B.大前提不正确 |
C.小前提不正确 | D.全不正确 |
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8 . 观察如图所示的“三角数阵”
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/3d95654f-827c-41e4-82a3-b5e0bbc8972e.png?resizew=207)
记第
行的第
个数为
,请仔细观察上述“三角数阵”的特征,完成下列各题:
(1)第
行的
个数依次为_____、_____、_____、_____、_____、_____;
(2)依次写出
、
、
、
;
(3)归纳出
与
的关系式.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/3d95654f-827c-41e4-82a3-b5e0bbc8972e.png?resizew=207)
记第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69d45e896826de39e9704cb71b508224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b428f15acf8dd69d2e9a9a0559202230.png)
(1)第
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
(2)依次写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65fc200f10b97588a0c9896277c9c64.png)
(3)归纳出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7230de53663c75658c58bbf206a0085.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
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2021-08-31更新
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116次组卷
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4卷引用:新疆皮山县高级中学2020-2021学年高二下学期期中考试数学(文)试题
9 . 已知样本点
,若
且回归直线为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87ba7d9690eed32932bc19c1eb9eebe3.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59046e1dd39b3254fdb1fe68f3eaa804.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cdd689351707c6167a7295620172837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a2f24672d31c1c3738f3a866f21a01d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87ba7d9690eed32932bc19c1eb9eebe3.png)
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10 . 下列说法不正确的是( )
A.回归分析中,![]() |
B.若一组观测![]() ![]() ![]() ![]() ![]() ![]() ![]() |
C.回归分析是对具有相关关系的两个变量进行统计分析的一种常用方法 |
D.画残差图时,纵坐标为残差,横坐标一定是编号 |
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2021-08-31更新
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6卷引用:新疆皮山县高级中学2020-2021学年高二下学期期中考试数学(文)试题
新疆皮山县高级中学2020-2021学年高二下学期期中考试数学(文)试题(已下线)4.3.1一元线性回归模型-2021-2022学年高二数学同步知识梳理+考点精讲精练(人教B版2019选择性必修第二册)河南省洛阳市2021-2022学年高二下学期期中考试文科数学试题河南省济源市2021-2022学年高二下学期期末教学质量调研模拟试题(四)数学(文)试题湖南省常德市2023届高三二模数学试题专题21计数原理与概率与统计(单选题)