1 . 设a=0.98+sin0.01,b=e﹣0.01,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e553268be952e6354807c84a15e9bd9.png)
A.b>a>c | B.c>b>a | C.b>c>a | D.c>a>b |
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2 . 某地区共8000人参加数学联考,考试成绩ξ近似服从正态分布N(100,
),若P(100≤ξ≤110)=0.35(90分以下)的学生人数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f78142a3357326171ba66910b79246e6.png)
A.1000 | B.1200 | C.1400 | D.2800 |
您最近一年使用:0次
解题方法
3 . 数列
的前
项和为
,
,
,设
,则数列
的前51项之和为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe7bdaaf8b0adf10bf2ef6c1255b1dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acf2bf7b9ceb7bcc9359611410eb1e6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54cb8010c98d0dd088ccfaba994dc19d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
A.![]() | B.![]() | C.49 | D.149 |
您最近一年使用:0次
名校
4 . 将函数
的图象向右平移
个单位长度后得到的图象与
的图象关于原点对称,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80545adee988b998a159c7fd90ab3ccc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1f07948e9258b482a2164ac871f90f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf36e9bbe4dc23bb02d452d38afb9d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-05-18更新
|
946次组卷
|
3卷引用:2024届四川省攀枝花市高三下学期第三次统一考试文科数学试题
2024届四川省攀枝花市高三下学期第三次统一考试文科数学试题湖北省黄冈市浠水县第一中学2024届高三下学期第四次高考模拟数学试题(已下线)【练】专题2 y=Asin(ωx+φ)参数范围问题(压轴小题)
5 . 由直线
上的一点
向圆
引切线,切点为
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d04676a66ccb0463951f3934cc4e04b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d44e8bc37ed03f44470762748a8f942a.png)
A.![]() | B.2 | C.![]() | D.![]() |
您最近一年使用:0次
6 . 已知函数
.
(1)当
时,求函数
在
处的切线方程;
(2)设函数
的导函数为
,若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/949d765feb226500ca0736dd4d0fbd11.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/724340d69477c0ec2418c392b22b1cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8224b38d6e855172dd0ef7d6db91e86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f057bf79e066c9e6421f4efb06566a5.png)
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解题方法
7 . 已知抛物线
上一点
到焦点
的距离为2,点
到
轴的距离为
.
(1)求抛物线
的方程;
(2)过
的直线交抛物线
于
两点,过点
作
轴的垂线交直线
(
是坐标原点)于
,过
作直线
的垂线与抛物线
的另一交点为
,直线
与
交于点
.求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ea1be9b9b6bb12afa7e1ce703d1603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8794dad05cff3e19d6ba8f1658aa8422.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e807e8ad00ca04e6cb81db762e00c375.png)
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8 . 请在①
,②
,③
三个条件中选择一个,补充在下面的问题中,并完成解答.
的内角
所对的边分别是
,已知______.
(1)求角
;
(2)若
,点
在边
上,
为
的平分线,
的面积为
,求边长
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55c2d6765572a01f646a8fcf1b660ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8a6bdbae1a5825cb37837e97a9cd5d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01d9a0d18ba525c542c01dad6420dd98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
(1)求角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3320a13248a3a1208ff6ee85c9d26f36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fabb884dc5f9609de491245463bbe9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f15ba851a0f65c271ec774095516f07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18483c9c195ecd922772527fa85c0fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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解题方法
9 . 随着互联网的普及和数字化技术的发展,网络直播成为了一种新型的营销形式,因其更低的营销成本,更快捷的营销覆盖而深受商家青睐.某电商统计了最近5个月某商品的网络直播线上月销售量y(单位:千件)与售价x(单位:元/件)的情况如下表所示.
(1)求相关系数
,并说明是否可以用线性回归模型拟合
与
的关系(当
时,可以认为两个变量有很强的线性相关性;否则,没有很强的线性相关性)(精确到0.01);
(2)建立
关于
的线性回归方程,并估计当售价为52元/件时,该商品的线上月销售量为多少千件?
参考公式:对于一组数据
,相关系数
,其回归直线
的斜率和截距的最小二乘估计分别为:
.
参考数据:
.
售价 | 53 | 49 | 51 | 50 | 47 |
月销售量 | 5 | 9 | 7 | 10 | 9 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](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/83379f6c41b07a3fe4843f66eeaff7f4.png)
(2)建立
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
参考公式:对于一组数据
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eedcccbd14777455882e63d8493d3807.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6be3ab96c035d1d6615b0f119280be1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf01576275d00e73e352461e8dac5b2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/446c21b8025405469a473aa0b32f9373.png)
参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bed70143ab8323873589468e500c0953.png)
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10 . 等差数列
的前
项和为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ebce85ea9bc18815ef8887057030a63.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b27c593f8faa6f088046735206e5502.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ebce85ea9bc18815ef8887057030a63.png)
您最近一年使用:0次