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1 . 按要求计算:
(1)分解因式:
;
(2)已知
,求
的值;
(3)
;
(4)已知
,求
的值.
(1)分解因式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dfdb71089c581d4a65a944f18fcfc40.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ccf1328602bd22b09ca55faa023a3d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ac0218b480ef3eeec90ad04bdffb55f.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/875e9e322ab55609bf86fbc632175bda.png)
(4)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80236b37de6f299b5ff05d1ff29850c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31f3398b18fc1b3285129af356f48e1.png)
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2 . 图①,在
中,
,
,
.求作菱形
,使点
在边
上,点
、
在边
上,点
在边
上.根据小明的作法,下列说法中正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/c81620dc-cb79-41d2-948d-1a0aeb36a4dc.png?resizew=164)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e3262fc038bbec5e7c8cc47df08bef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70dc2c20619a4fc12a0cfda59af5b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2257da1e2425f2ea9ac7440f52659ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/27/c81620dc-cb79-41d2-948d-1a0aeb36a4dc.png?resizew=164)
小明的作法 1.如图②,在边 ![]() ![]() ![]() ![]() ![]() ![]() 2.以点 ![]() ![]() ![]() ![]() 3.在 ![]() ![]() ![]() ![]() ![]() |
A.按照小明的作法,一定能作出菱形![]() |
B.当![]() |
C.当只能作出一个菱形时,![]() |
D.作出的菱形周长最大为![]() |
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3 . 若
,则有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f654bd4ce596d08c7e09149d97a82373.png)
A.![]() | B.![]() |
C.![]() | D.函数![]() |
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4 . 下列各式:①
;②
;③
;④
;⑤
,其中计算正确的个数有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/111848feaac6190bc8d4f98c56aaa93d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19085f2f3fa5264f5ec1a9fcf7e30330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba92522ec440429bc91ed5a359a9f8c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fff58e47500ee4ed5b74453118d94980.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c256c5c9e5b75bb4025d3cad9145183.png)
A.1个 | B.2个 | C.3个 | D.4个 |
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5 . 一个大箱子内放有5本科学杂志和7本文学杂志,小张先从箱内随机抽取1本(不放回),小李再从箱内随机抽取1本,已知小张抽取的是文学杂志,则小李抽取的是科学杂志的概率为( )
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-12-27更新
|
536次组卷
|
6卷引用:高一数学开学摸底考 01-人教B版2019必修第一册+第二册摸底考试卷
(已下线)高一数学开学摸底考 01-人教B版2019必修第一册+第二册摸底考试卷10.1.3古典概型练习(已下线)专题23 随机事件与概率-《重难点题型·高分突破》(人教A版2019必修第二册)陕西省西安市部分学校2024届高三上学期12月联考数学(文)试题陕西省西安市长安区教育片区2024届高三上学期模拟考试数学(文)试题(已下线)模块一 专题4 概率和分布(1)
6 . 已知矩形ABCD,点E、F分别在AD、DC边上运动,连接BF、CE,记BF、CE交于点P.
,求线段DE的长度;
(2)如图2,若
,求
;
(3)如图3,连接AP,若
,求PB的长度.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3274fa0ba1cc131cf913802f7733001a.png)
(2)如图2,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c29402df410d36f0e9b938b29f45595b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e34892d160c72edfc3d1e3f12adca89f.png)
(3)如图3,连接AP,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1044f5984d06e1d15fc0ef941c283261.png)
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7 . 如图,已知直线
与直线
交于横坐标为2的点A,将直线
向下平移4个单位长度后交y轴于点B,交
于点C,交x轴于点E,点C的纵坐标为
.
在平移至直线
的过程中,与x轴交点的横坐标的取值范围;
(2)求直线
的解析式;
(3)直线
绕点C逆时针旋转
得到的直线与x轴交于点F,与直线
交于点G,求
的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be06299fc124d12d1ab40e25ba9a455.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(3)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/844e53c7d52eb738259e997d5c99b6ba.png)
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8 . 已知
是二次函数
图象上的一系列点,其中
,记
(n为正整数),令
,则S的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fb1b052b4fbeab908e1e3d4a2903f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5109eb35b9c16fc5e128198a1819a44c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4f74cba0f2dcda7e483808b7aaaabb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c414502a9d5420715cb39e6fc2d64c47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeaeefb8d052ab78155b326f7392555d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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9 . 已知点
,O为坐标原点,点B在第一象限且在反比例函数的图象上,若
为等边三角形,则此反比例函数的解析式是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/448c0a5ee776d19ce8e42ac9a5fd27c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
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10 . 正方形边长等于
,通过它的中心引一条直线,已知正方形的四个顶点到这条直线的距离的平方之和恒为定值,则这个定值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
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