名校
1 . 若
,且
,则实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9053df826e0293fb6a242f5a2cc599f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02265b6260d8eb53f9be2ecf14b02b4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7日内更新
|
108次组卷
|
2卷引用:江西省吉安市六校协作体2024届高三下学期5月联合数学试题
名校
解题方法
2 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc7e499a99496563ba14bea539e9ff1.png)
A.![]() ![]() |
B.![]() ![]() |
C.若方程![]() ![]() ![]() ![]() |
D.若方程![]() ![]() ![]() ![]() ![]() |
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解题方法
3 . 已知函数
的定义域为
,
是偶函数,当
时,
,则曲线
在点
处的切线斜率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac87434324956e4145e38ad92a1aa95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d0e9cd42a043be4c6e552c6cf4cbdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e29d9430326bf1794e23077e89d47a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1adbfd9d0188bc6e5eb87efdde35f49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0afb80007983e5b99dcdeebf87d18ff4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9770b18d9984172e6c08bf0921ec4200.png)
A.![]() | B.![]() | C.2 | D.![]() |
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2024-06-13更新
|
678次组卷
|
3卷引用:江西省吉安市第一中学2024届高三三模数学试题
名校
解题方法
4 . 为营造欢乐节日气氛、传承传统习俗,同时又要确保公共安全,某市决定春节期间对烟花爆竹燃放实施“禁改限”,规定可以在农历正月初一到初六及十五在市区
两个规定区域燃放烟花爆竹,甲、乙两人各自决定从这7天选1天去
中的一个区域燃放烟花爆竹,若甲、乙两人不在同一天去同一个地方,则去的种数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
A.35 | B.84 | C.91 | D.182 |
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名校
解题方法
5 . 已知
的内角
,
,
的对边分别为
,
,
,且
,若
的面积等于
,则
的周长的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/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/21ef8315c7025591f30d250797e7eff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2024-06-12更新
|
540次组卷
|
3卷引用:江西省吉安市第一中学2024届高三三模数学试题
名校
6 . 初中学过多项式的基本运算法则,其实多项式与方程的根也有密切关联.对一组变量
,幂和对称多项式
,且
;初等对称多项式
表示在
中选出
个变量进行相乘再相加,且
.例如:对
.已知三次函数
有3个零点
,且
.记
,
.
(1)证明:
;
(2)(i)证明:
;
(ii)证明:
,且
;
(3)若
,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe1c31a81f198c443e71b83ca662939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74b85069b184b032808ce05636373b63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d15873316d0c17fbcbbe376834e5697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b63239fb9313458d7f86b64d2860beba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fe1c31a81f198c443e71b83ca662939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fba0d57c2c8fcc1cef3a02b67d4193b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca373f163399198a6beb169fe6df5262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aef4ab1ca44d62d6451f85e41258abe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c5f85f6501033a93c8be7363d59c8df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05b8ec9d4206ea66a02de5c4a1e1e911.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/489340c9a2d70c00bae13b7018cad448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a93e7bb2538cf1dcb50722aa9cf0550c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a38c64a6143b210aa315e0b6bfaccf94.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e856070d58b6aefce7e914426d7f95c.png)
(2)(i)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/549ef2a5b6592308c2da9233aca63e77.png)
(ii)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6429dd74013b8984de8dcaac9c862957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52121b304f70afcb2dfb3d4a614f7224.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23d177a7489e327bff83e61ac1eeaaf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac5235bf88c507cd6178e94914133d04.png)
您最近一年使用:0次
名校
解题方法
7 . 已知点
是抛物线
上不同三点,直线
与抛物线
相切.
(1)若直线
的斜率为2,线段
的中点为
,求
的方程;
(2)若
为定值,当
变动时,判断
是否为定值,若为定值,求出该定值;若不为定值,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35644a7d25d0410409238f52c8818083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e39bd21af422662049290a3aa4841b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e325d1e4485ec4cfb3d7bb038d675d7d.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18fe48905f1e58b2fe08706c2f53b55c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13d726b14a313e000a81526162f35748.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3c5a4887dfe02b02ee90d740151e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1835c6f51b4471243b5e1a3d6e74c203.png)
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解题方法
8 . 如图,
为圆锥
的轴截面,点
为圆
上与
不重合的点.
上找一点
,使平面
平面
,并证明你的结论;
(2)若
平面
,点
在平面
的两侧,
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76bae7e67603622a563c8af8c783a203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e65ac334119ccd6204402a7aba29a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.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/0de86428989fecb8456aeea90d18b185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa8406f2441769ce49264ccca6585dc9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/778a9b58e5fbc75c441ccbc10e7ac736.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e226bcb5e8c165908dd5c9f803246ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e226bcb5e8c165908dd5c9f803246ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf0de608b32510ca7580d74e6aa8d025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa8406f2441769ce49264ccca6585dc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4569d453fa23d624979159b9a2678bc.png)
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解题方法
9 . 2023年10月国家发改委、工信部等部门联合印发了《加快“以竹代塑”发展三年行动计划》,该计划将推动“以竹代塑”高质量发展,助力减少塑料污染,并将带动竹产业新一轮的增长.下表为2019年—2023年中国竹产业产值规模
(单位:千亿元),其中2019年—2023年的年份代码
依次为
.
(1)记第
年与
年
中国竹产业产值规模
差值的2倍的整数部分分别为
,从
中任取2个数相乘,记乘积为
,求
的分布列与期望;
(2)根据以上数据及相关系数,判断能否用线性回归模型拟合中国竹产业产值规模
与年份
之间的关系.
参考数据:
,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db0758d5878a469b85f4612573db940.png)
相关系数
若
,则认为
与
有较强的相关性.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d721177bd50b50b3f923e4d1768dbd9f.png)
![]() | 1 | 2 | 3 | 4 | 5 |
![]() | 2.89 | 3.22 | 3.82 | 4.34 | 5.41 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12444d6e8d3b097a9d090e6ed06042e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c19482c76310dc031696d73de0894016.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/697e84689167caa36ac89184035aab56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070bc2b987dc22130e554bd47753f425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
(2)根据以上数据及相关系数,判断能否用线性回归模型拟合中国竹产业产值规模
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3b143379ef32c148ae4bba788056728.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e45a40fdbcfc12977715793c117af9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/454ccb3037c4f45b146b92aedb15804b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1db0758d5878a469b85f4612573db940.png)
相关系数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3efc2abb538887a406e584dc28c1946.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2991502b0be7df4183b9e42b6c53c6e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
您最近一年使用:0次
10 . 已知函数
.
(1)当
时,求曲线
在
处的切线方程;
(2)若函数
有2个零点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84f8d67a346823fc9f192ff1cc5331aa.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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