1 . 围棋是我国发明的古老的也是最复杂的智力竞技活动之一.现代围棋棋盘共有19行19列,361个格点,每个格点上可能出现黑子、白子、空三种情况,因此整个棋盘上有
种不同的情况,下面对于数字
的判断正确的是( )
(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2f99ea5a69e5e2efdc6a1a08f4e8e90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2f99ea5a69e5e2efdc6a1a08f4e8e90.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70345587c2d90c50abb161cd7e158a67.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
2 . 数列
满足
,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d19b1bb59962c993a48919ae038b779.png)
A.![]() | B.数列![]() |
C.若![]() ![]() | D.若![]() ![]() ![]() |
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3 . 已知函数
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93208bc770714ae8311ab2ba6274ea8d.png)
A.存在![]() ![]() ![]() |
B.对任意![]() ![]() ![]() |
C.对任意![]() ![]() ![]() |
D.存在![]() ![]() ![]() |
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5卷引用:江西省部分学校2023-2024学年高二下学期第二次月考(5月联考)数学试题
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解题方法
4 . 已知
,
,
,动点
满足
与
的斜率之积为
,动点
的轨迹记为
,过点
的直线交
于
,
两点,且
,
的中点为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c850811ba59a05e945a665196539a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca0b4afd16b79370532de44989d6c43d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78fd95f89dec2d373fa57f02acd739f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
A.![]() ![]() |
B.![]() |
C.若![]() ![]() ![]() |
D.若线段![]() ![]() ![]() ![]() ![]() ![]() |
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|
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5 . 已知数列
是公差为
的等差数列,若它的前
项的和
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90bfe21c96489cb30c544d49ddb4c1c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5596e3d616cd804ad9a29a98b720831d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/079f16bbd0704ecb6e5e44c5725af1d9.png)
A.若![]() ![]() ![]() ![]() |
B.![]() ![]() |
C.![]() |
D.![]() |
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2卷引用:江西省宜春市丰城中学2023-2024学年高一下学期第三次段考(5月月考)数学试题
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6 . 英国科学家牛顿在数学、物理、天文学方面作出了巨大的贡献.他曾用“切线法”求函数零点的近似值,方法是不断通过作函数
图象的切线,这些切线与
轴的交点的横坐标就是函数
一个零点的不同程度的近似值;现在给定函数
,点
是曲线上的点,设
,以点
为切点作曲线
的切线,切线与
轴的交点的横坐标为
;又以点
为切点作曲线
的切线,切线与
轴的交点的横坐标为
,……,一直下去,得到数列
;又记
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58f3aae3d8f8d6bdbbba7c7751f13882.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f5832c0296400f0a756634e912db3e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b9d56247c3c62a79ec98290642268e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b3b54e0dcdc081d45fb3df933cddc29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d93f8e7f0cee389f9d8cbb0d812f8359.png)
A.![]() | B.![]() |
C.![]() | D.设数列![]() ![]() ![]() ![]() |
您最近一年使用:0次
7 . 设
为坐标原点,直线
过抛物线
的焦点
且与
交于
两点,
满足
与
相交于点
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7d0baca0e444995a4029a2c58470b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360496a4f5cc8a5faca5e089ae4f9531.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.![]() ![]() ![]() | B.![]() |
C.![]() | D.![]() |
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8 . 已知
、
是椭圆
:
上两个不同的动点(不关于两坐标轴及原点
对称),
是左焦点,
为离心率.则下列结论正确的是( )
![](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/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
A.直线![]() ![]() ![]() ![]() |
B.![]() ![]() |
C.当直线![]() ![]() ![]() ![]() ![]() |
D.当![]() ![]() ![]() |
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解题方法
9 . 下列说法正确的是( )
A.连续抛掷一枚质地均匀的硬币,直至出现正面向上,则停止抛掷.设随机变量![]() ![]() |
B.从6名男同学和3名女同学组成的学习小组中,随机选取2人参加某项活动,设随机变量![]() ![]() |
C.若随机变量![]() ![]() |
D.若随机变量![]() ![]() ![]() ![]() |
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|
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|
3卷引用:江西省吉安市第一中学2024届高三三模数学试题
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10 . 土壤是自然界中最大的生态系统,具有十分重要的作用.利用绿色化学药剂来降低土壤中的重金属含量是改善土壤环境的一项重要工作,若在使用绿色化学药剂降低土壤中重金属含量的过程中,重金属含量
(单位:
与时间
(单位:
)满足关系式
,已知处理
后,重金属含量减少
,则( )
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b72045c4dfd00534d846aa8a4a30e8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1933311c0c090e1138e4dd388b7adf8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00a55c8261ceaa949d76177fdfa0efdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b29f60fc3d32ca94740f0adf3fd0b53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ee628efd6b2f7296c106dd5cbae42f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/170b2e2eac5c81d120be3468a2ccddd8.png)
A.![]() | B.![]() ![]() |
C.使土壤中的重金属含量减少一半需要处理约![]() | D.函数![]() |
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3卷引用:江西省2023-2024学年高三下学期4月联考数学试题