1 . 过点
的直线与圆
交于
,
两点,则
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37265a2c5a6db6e7571f16286aaed83e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49137970108f50350a3211aa0281faaf.png)
![](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/bf2d50a03130b0d6036f8354b81b7243.png)
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2022高一·全国·专题练习
2 . 已知函数
.
(1)当
时,求函数
在
上的取值范围;
(2)当
时,求函数
在
上的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389df5bf66ae866f474083813c20bbda.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4c884ac7d312e853b2ed2de4f5a647c.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b108ab31cc093f03cf48ad65429889e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348771857779c9db5f85996a891111cf.png)
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2022-07-07更新
|
660次组卷
|
5卷引用:河南省南阳六校2023届高三上学期第一次联考理科数学试卷
河南省南阳六校2023届高三上学期第一次联考理科数学试卷(已下线)1.2.1 函数最值 (分层练习)-2022年初升高数学无忧衔接(已下线)专题2.9 一元二次函数、方程和不等式全章综合测试卷-提高篇-2022-2023学年高一数学举一反三系列(人教A版2019必修第一册)陕西省咸阳市礼泉县2022-2023学年高一上学期期中数学试题广东省佛山市顺德区华侨中学(港澳班)等学校2024届高三下学期3月联考数学试题
解题方法
3 . 某学校举办毕业联欢晚会,舞台上方设计了三处光源.如图,
是边长为6的等边三角形,边
的中点
处为固定光源,
分别为边
上的移动光源,且
始终垂直于
,三处光源把舞台照射出五彩缤纷的若干区域.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/26/b6550c17-ac14-4a09-99aa-dbac9608a71b.png?resizew=170)
(1)当
为边
的中点时,求线段
的长度;
(2)求
的面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0d54431bbb28ebd98db5c1dc6083a75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce6c0e9de83f2e64ae33609fc08459d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/26/b6550c17-ac14-4a09-99aa-dbac9608a71b.png?resizew=170)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f68d65ed39a9dfd09c5b907b5de6b144.png)
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4 . 记方程①:
,方程②:
,方程③:
,其中
,
,
是正实数.当
,
,
成等比数列时,下列选项中,能推出方程③有两个不相等的实根的是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7319b374ae72250651fd94a404165ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c8d29c5ac6ff8898e77d17fad41b88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94b3ea1975024033bf77e5be2248b33e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](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/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e88093a749c0d46e0ee931ecfaff925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1ccc6c74b8754e9bcbb3f39a11b6f1.png)
A.方程①有实根,且②有实根 |
B.方程①有实根,且②无实根 |
C.方程①无实根,且②有实根 |
D.方程①无实根,且②无实根 |
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5 . 某工厂接到生产2022北京冬奥会吉祥物“冰墩墩”的订单,工厂安排甲、乙两个车间共同生产.若甲车间生产6天,乙车间生产5天,则两个车间的产量一样多.若甲车间先生产300个“冰墩墩”,然后两个车间又各生产4天,则乙车间比甲车间多生产100个“冰墩墩”,求两车间每天各生产多少个“冰墩墩”?设甲车间每天生产x个“冰墩墩”,乙车间每天生产y个“冰墩墩”,则可列方程组为( )
A.![]() | B.![]() |
C.![]() | D.![]() |
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6 . 如图,AB为半圆O的直径,C为半圆上的一点,
,垂足为D,延长OD与半圆O交于点E.若
,
,则图中阴影部分的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a11c1db76cc7e1894f74a50d71736455.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aabecf66d94e4094f9cc46fd8ee050f1.png)
![](https://img.xkw.com/dksih/QBM/2022/5/3/2971556652843008/2974950109659136/STEM/6dc3b69d-f090-488c-a6b1-7b2286795eac.png?resizew=187)
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7 . 下列四个实数中,最小的数是( )
A.-3 | B.-2 | C.0 | D.![]() |
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8 . 下图是小明复习全等三角形时遇到的一个问题并引发的思考,请帮助小明完成以下学习任务.
如图,OC平分
,点P在OC上,M、N分别是
、OB上的点,
,求证:
.
小明的思考:要证明
,只需证明
即可.
证法:如图①:∵OC平分
,∴
,
又∵
,
,∴
,
∴
;
请仔细阅读并完成以下任务:
![](https://img.xkw.com/dksih/QBM/2022/5/3/2971556652843008/2974950110486528/STEM/93b06bfd-3171-47a5-9d77-19e02cb916d0.png?resizew=524)
(1)小明得出
的依据是______(填序号).
①SSS ②SAS ③AAS ④ASA ⑤HL
(2)如图②,在四边形ABCD中,
,
的平分线和
的平分线交于CD边上点P,求证:
.
(3)在(2)的条件下,如图③,若
,
,当△PBC有一个内角是45°时,
的面积是______.
如图,OC平分
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2032fccdf9ab12429aae024d67b19d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acd79bb9fb06f7c806eb6e17e4b613.png)
小明的思考:要证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acd79bb9fb06f7c806eb6e17e4b613.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94d54326f92838c51a197cc82985e506.png)
证法:如图①:∵OC平分
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c1f18cef1745d84a0265246684753bd.png)
又∵
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25ce5cddb3791c46d6ef0c32d35a7886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2032fccdf9ab12429aae024d67b19d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905a8192e8d6365309562606283e9959.png)
∴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4acd79bb9fb06f7c806eb6e17e4b613.png)
请仔细阅读并完成以下任务:
![](https://img.xkw.com/dksih/QBM/2022/5/3/2971556652843008/2974950110486528/STEM/93b06bfd-3171-47a5-9d77-19e02cb916d0.png?resizew=524)
(1)小明得出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/905a8192e8d6365309562606283e9959.png)
①SSS ②SAS ③AAS ④ASA ⑤HL
(2)如图②,在四边形ABCD中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/609ada36dd56b33279103ebc1f90bbac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4189a0821a0ffab9dc171ecd279ba442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed66431681da1db8f7cb0f40cd19201.png)
(3)在(2)的条件下,如图③,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afcd54ff42ebdc70cb273cd5909d549f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
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9 . (1)计算:
;
(2)解不等式组:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6fb5eb938a815e834f04e92a2445af4.png)
(2)解不等式组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9104bf8a6a8f4daeeddc5145c82375a2.png)
您最近一年使用:0次
10 . 篮球是中考体育加试项目之一,某校为满足学生日常需要,购置一批篮球设施.图1是某校购置的符合最新国际标准的篮球架,既符合大众的审美,还能最大程度保证学生们在锻炼时的安全,图2是该篮球架的侧面图,该篮球架由篮板EF、篮筐点E、平衡杆CE、支撑臂BC、辅助臂BD、主支架OA组成.其中MN为水平地面,主支架
于O,支撑臂BC过点A,平衡杆
水平地面MN,篮板
于点E,辅助臂BD的另一端点D固定在地面MN上经测量,辅助臂BD长1.5米且与水平的倾斜角为60°,支撑壁BC长2.9米且与水平面的倾斜角为37°,请根据上述数据求篮筐点E与地面的距离.(最后结果精确到0.01米,其中
,
,
,
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45fd6c9f4d28d6b52e9be805b5870f87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58a20ea69475dcf57a5ff18c13eceaaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40fe2cc764de5fa58e9d90d750c5c528.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc714fe6656552ae227332550756a620.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90b8e784cfcf697083f5a1bef0baa7cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d0062f4f00732a0cf11d1ac145c218b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47bb3f35e3db7c1f3a3dd3eb20151b5f.png)
![](https://img.xkw.com/dksih/QBM/2022/5/3/2971556652843008/2974950109773824/STEM/a81b181b-7a73-405f-b46d-599bab313b99.png?resizew=418)
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