名校
解题方法
1 . 若
,则
的值为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b3e0f638a0dc902d959f7cf8303be3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fcefcd3f339935767c3d8d01774d7cb.png)
A.2 | B.0 | C.![]() | D.![]() |
您最近一年使用:0次
2024-03-23更新
|
174次组卷
|
2卷引用:第八届高二试题(A卷)-“枫叶新希望杯”全国数学大赛真题解析(高中版)
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2 . 已知
为
的切线,
与
交于
,弦
经过点
.求证:
平分
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2891b18eef907a1aa06c0920a5a6bc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/091e86ca89e484b331fd90125a5e5af3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb686e4f5e3938575bc547e849d5513f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/11/7f2a1ea6-c457-4c35-b9a6-550171c095e0.png?resizew=195)
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2023-05-20更新
|
74次组卷
|
2卷引用:安徽省蚌埠第二中学2020-2021学年高一上学期自主招生考试数学试题
3 . ①“
两条弦相等”是“
两条弦所对的圆周角相等”的充要条件;
②“
为空集”是“
或
”的必要不充分条件;
③“
或
”的否定是“
且
”;
④“有一个偶数是素数”的否定是“任意一个偶数都不是素数”.
以上说法正确的有____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
②“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a347e53d69e6279105061e656d2f5bc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cf1e97de471ad174a6e9d4c41dafabc.png)
③“
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d09b9fc9719ff6faf32254b9d48713.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb0469b312798e19c24fe494d03fb0a9.png)
④“有一个偶数是素数”的否定是“任意一个偶数都不是素数”.
以上说法正确的有
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4 . 下列说法正确的有( )
A.二次函数![]() ![]() |
B.平面内![]() ![]() ![]() ![]() ![]() |
C.集合![]() ![]() ![]() |
D.全称量词命题“每一个四边形的四个顶点在同一个圆上”是假命题 |
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真题
5 . 某地区有5个工厂,由于用电紧缺,规定每个工厂在一周内必须选择某一天停电(选哪一天是等可能的).假定工厂之间的选择互不影响.
(1)求5个工厂均选择星期日停电的概率;
(2)求至少有两个工厂选择同一天停电的概率.
(1)求5个工厂均选择星期日停电的概率;
(2)求至少有两个工厂选择同一天停电的概率.
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6 . 已知
的导数存在,
的图象如图所示,设
是由曲线
与直线
,
及x轴围成的平面图形的面积,则在区间
上( )
![](https://img.xkw.com/dksih/QBM/2022/5/13/2978332261089280/2978421994168320/STEM/b2e475dc-1642-4e61-ad96-bdf6cc9a981f.png?resizew=150)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50fad31f02e652b0225b4d7a6057421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54b53b86bd516400d6fa7dabb3603f31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f7b16d65f1b2b8bea8cf4a83fde925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4776c85b79df196f606d3ebf3697fbc3.png)
![](https://img.xkw.com/dksih/QBM/2022/5/13/2978332261089280/2978421994168320/STEM/b2e475dc-1642-4e61-ad96-bdf6cc9a981f.png?resizew=150)
A.![]() ![]() ![]() | B.![]() ![]() ![]() |
C.![]() ![]() ![]() | D.![]() ![]() ![]() |
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2022-05-13更新
|
557次组卷
|
5卷引用:浙江省杭州第二中学滨江校区2021-2022学年高二下学期4月期中数学试题
7 . 设
分别是函数
图像上的点,定义
的最小值为函数
的距离
.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/223961c9eeb62dbad2afa33aa755b3f3.png)
_______ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba0c1d02fb87a01b308078f55c98a71b.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c0ed188d083966baaae94e6b86064f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44e8bc37ed03f44470762748a8f942a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c0ed188d083966baaae94e6b86064f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c08adc966e1a77490acedad60a593d47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/223961c9eeb62dbad2afa33aa755b3f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba0c1d02fb87a01b308078f55c98a71b.png)
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8 . 在古巴比伦泥板(公元前
年-前
年)有这样一个数学问题:
兄弟分
个金币,哥哥比弟弟依次多分.已知每一个级差相等,还知道老八分得
个金币(每个人分得的金币可以是分数).问:老三应该得_________ 金币,老大比老二多________ 个金币.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4abb59695562b3a1295a251dc97da700.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dadc63e6e33743ce590ed968948a5a58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d07ae0b4264da6a8812454ffd2f20d94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efba7147f5b9ced8bc4a72f0a9fb8af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
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解题方法
9 . 如图,正方形
的边长为4,动点
从
点出发,沿逆时针方向在正方形边上运动一周回到
点. 动点
走过的路程记为
连线的长度记为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/9c7e511b-87df-4414-8bb0-6015221da14b.png?resizew=152)
(1)当
时,求
的值;
(2)将
表达成
的函数;
(3)当
时,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa52cb90ea1b2ef7ca9d5374e820a59e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/9c7e511b-87df-4414-8bb0-6015221da14b.png?resizew=152)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39cc033406da2cdd342308972c6701f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d1b79ed103afbfd370fdff59c149d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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10 . 从6种不同的蔬菜种子
,
,
,
,
,
中选出4种,分别种在4块不同的土壤
,
,
,
中进行试验,已有资料表明
土壤不宜种植
,
土壤不宜种植
,但
、
品种产量高.现
、
品种必种的试验方案有________ 种.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca4ff0af96ea467337cb30c4c765b5f7.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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