解题方法
1 . 某公司对其产品研发的年投资额
(单位:百万元)与其年销售量
(单位:千件)的数据进行统计,整理后得到如下统计表:
(1)求变量
和
的样本相关系数
(精确到0.01),并推断变量
和
的线性相关程度;(若
,则线性相关性程度很强;若
,则线性相关性程度一般,若
,则线性相关性程度很弱.)
(2)求年销售量
关于年投资额
的回归方程.并预测投资额为700万元时的销售量.(参考:
)
参考:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
x | 1 | 2 | 3 | 4 | 5 |
y | 1.5 | 2 | 3.5 | 8 | 15 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca1ce3658ea5a3a0c89b6684cc0a38e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e7ef52720650de5c267b9b9481beb2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8fec61bfda7853cc9bd19e4997f6a75.png)
(2)求年销售量
![](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/2cbc353fa8ab43da637d7e9d140262c9.png)
参考:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cef5460feb0bc17ab2713bb8c73fd436.png)
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23-24高三上·山东德州·期中
名校
解题方法
2 . 记函数
的导函数为
,已知
,
.
(1)求实数
的值;
(2)求函数
在
上的值域.
![](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/2b5d96ffc06139766a4e2fb9113b2b4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a75b22751ec2e2618e52ea3325d6a974.png)
(1)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
(2)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab90f84a9b6ec1334ce6fc12495ec218.png)
您最近一年使用:0次
2023-11-15更新
|
556次组卷
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7卷引用:河南省南阳市六校联考2023-2024学年高二下学期4月期中考试数学试题变式题11-15
(已下线)河南省南阳市六校联考2023-2024学年高二下学期4月期中考试数学试题变式题11-15(已下线)山东省德州市2023-2024学年高三上学期期中考试数学试题湖南省益阳市南县第一中学2023-2024学年高二上学期期末模拟数学试题(创新班)(已下线)第10讲 第五章 一元函数的导数及其应用 章节验收测评卷(综合卷)-【帮课堂】2023-2024学年高二数学同步学与练(人教A版2019选择性必修第二册)河北省石家庄市第二中学西校区2023-2024学年高二下学期3月月考数学试题广东省肇庆鼎湖中学2023-2024学年高二下学期4月段考数学试题重庆市第十八中学2023-2024学年高二下学期中期学习能力摸底考试数学试题
3 . 已知函数
(
).
(1)讨论函数
的单调性;
(2)若函数
在点
处的切线
与直线
垂直,解不等式
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dca377668811d6b06bcacda9228c040.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1d32d1a5a0732c7e4af737555e44ff9.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bea9227dd0104da58e0c40952cc87ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78d38872e6210a3807679e530bf17880.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51484916080a54550aea05cd2a8af080.png)
您最近一年使用:0次
4 . 在直角坐标系
中,以原点
为极点,
轴的正半轴为极轴,建立极坐标系,两种坐标系取相同的长度单位.圆
以极坐标系中的点
为圆心,
为半径.直线
的参数方程是
(
为参数).
(1)求圆
的极坐标方程;
(2)判断直线
与圆
的位置关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a82b85d3f59cf6c73fd6f31cb8bd097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e37483980dc3b2dc19930379db98cb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c3cf576fe468e4ed224d4be5871192.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2024-02-21更新
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2卷引用:中原名校2022-2023学年高三上学期质量考评三理数试题
5 . (1)求证:
(其中
)
(2)已知
、
、
、
都是实数,且
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2753dee1cf2935ce2f46ef406fc0e15a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8a671406a5442a3088a4ee1d064114a.png)
(2)已知
![](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/04959523a28786962d51cfb43a8767d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70a92f426264c24f324cab3dc8017f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0950c6ba9c0ff6b53f9231a7eec44d1.png)
您最近一年使用:0次
名校
6 . 设
是正整数,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c496b822e4765fc9bb17685f39a4f05.png)
(1)求证:当
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eb1296f8b1307fd35d219d51f15c242.png)
(2)求证:当
时,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c496b822e4765fc9bb17685f39a4f05.png)
(1)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a79d7f73b6128650bf7aed538260c72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9eb1296f8b1307fd35d219d51f15c242.png)
(2)求证:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11e964999066e7ab9780d6a898bd74d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d093aa4e6b898ff1dab1a5b46519eb3.png)
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2024-02-11更新
|
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2卷引用:中原名校2022年高三一轮复习检测联考卷数学(理)试题
解题方法
7 . 已知函数
,且
的解集为
.
(1)求a,b的值;
(2)若正数m,n,p满足
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c7bb3752533ee0687828fdbee0de7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/709db55f0b99a5023eda64def7d72ea2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e82d5a43bc438c7710749af5a4ea988.png)
(1)求a,b的值;
(2)若正数m,n,p满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b4eaaa632f2fd3ceb159818bd2915b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df89592cfc69c1756c07ee52fad1456b.png)
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2022-11-23更新
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3卷引用:高三理数试题-河南省豫南六校2022-2023学年高三上学期第一次联考试题
8 . 已知
.
(1)当
时,解不等式
;
(2)若关于
的不等式
的解集中恰有3个整数,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87752665bcdbe4f35940c8e13ecda792.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
(2)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b666663ce3537a634a3b427b418eb62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2022-10-12更新
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219次组卷
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2卷引用:高一数学试题-河南省豫南六校2022-2023学年高一上学期第一次联考试题
解题方法
9 . 已知集合
.
(1)求
;
(2)若集合
,且
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56041c6530f781e26d6b2196a2542983.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da331a8c58b97333fcf642c92f089e0c.png)
(2)若集合
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9367cd9cf7f0f737859080ef2fe5916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c6ca098b764e0366d043b69ae9d8f68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2022-10-12更新
|
146次组卷
|
2卷引用:高一数学试题-河南省豫南六校2022-2023学年高一上学期第一次联考试题
解题方法
10 . 设函数
.
(1)某同学认为,无论实数
取何值,
都不可能是奇函数,该同学的观点正确吗?请说明你的理由;
(2)若
是偶函数,求实数
的值;
(3)在(2)的情况下,求函数
的单调递增区间.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6189f6b28bc39754d6bbdb2fd1c6263.png)
(1)某同学认为,无论实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(3)在(2)的情况下,求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
您最近一年使用:0次
2022-10-12更新
|
318次组卷
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3卷引用:高一数学试题-河南省豫南六校2022-2023学年高一上学期第一次联考试题