名校
1 . 已知集合
,集合
,函数
的值域为
(其中
),那么
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1486a67ae848fd26bc8926a3c3ced229.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d167be863d109213bd07becd62b74d12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a662f934b3bf3ad6f1f1414fedb381d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec1776bfd268b6b807ac573b4a87ce6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea535b0edb22ed681f133176db16866e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f03b3eb3374e16ea73de494d738293a0.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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解题方法
2 . 若实数
,
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd989ddfbed4a6aa18ea57734522153.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/99137cb98f861f53439fb56196610f6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd989ddfbed4a6aa18ea57734522153.png)
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3 . 已知方程
,下面四个命题是真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/608e3b6e18246d45521a240b5bfc5009.png)
A.当![]() |
B.当![]() ![]() |
C.当![]() |
D.当![]() ![]() |
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4 . 已知曲线
与
,下面结论不正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af2574349f25cec9c0e9c0f001989ac1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef3681fa214c32fcd1a498e3ae441627.png)
A.![]() |
B.![]() ![]() ![]() |
C.不等式![]() ![]() |
D.记点![]() ![]() ![]() |
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5 . 已知圆台的上底面半径为1,下底面半径为5,侧面积为
,则圆台的高为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd31b6c8c2c291056a97bb05b5211a35.png)
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2024-06-17更新
|
698次组卷
|
2卷引用:河南省信阳市名校2024届高三下学期全真模拟考试数学试题
6 . 若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71879a5747684424d64e7169543f9c03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af9bbe98100c8067ff36ac536d043a85.png)
A.180 | B.![]() | C.![]() | D.90 |
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2024-06-17更新
|
2064次组卷
|
3卷引用:河南省信阳市名校2024届高三下学期全真模拟考试数学试题
7 . 若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab03b7abf2969c0fa26c93335b110d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e304cf018473bb54edb166fcd6502b.png)
A.1 | B.![]() | C.2 | D.![]() |
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2024-06-17更新
|
1355次组卷
|
4卷引用:河南省信阳市名校2024届高三下学期全真模拟考试数学试题
名校
8 . 设集合
为
的非空子集,随机变量X,Y分别表示取到子集
中的最大元素和最小元素的数值.
(1)若
的概率为
,求
;
(2)若
,求
且
的概率;
(3)求随机变量
的均值
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a6a4cff8424ced7841221e2d54d95d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6c4b25a0b76fba785d5769c08714b15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41ab109ec88d6f3d24b2f01ca77e7038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe08722cf9300fe188dbbb71989c06c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e32a2f594955e456f0fddad1e090bb04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8b3576b4d98a5b4ddc380ddaa0fa281.png)
(3)求随机变量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec9f6ea6346066054b5c722763d6b026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f8506fbcb1fae930e1503065b9327a.png)
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2024-06-16更新
|
105次组卷
|
2卷引用:河南省信阳市新县高级中学2024届高三数学考前仿真冲刺卷
9 . 在平面直角坐标系xOy中,A,B点的坐标分别为
和
,设
的面积为S,内切圆半径为r,当
时,记顶点M的轨迹为曲线C.
(1)求C的方程;
(2)已知点E,F,P,Q在C上,且直线EF与PQ相交于点A,记EF,PQ的斜率分别为
,
.
(i)设EF的中点为G,PQ的中点为H,证明:存在唯一常数
,使得当
时,
;
(ii)若
,当
最大时,求四边形EPFQ的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d06d31c9a2298b02664a86ddd91b1121.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cee9e51b1dd360d8e141e7fa8f4224d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a5e0a51c9e14fb246b0ba0b231c1e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b722e2e83c2d125453ee2d80a5e64d26.png)
(1)求C的方程;
(2)已知点E,F,P,Q在C上,且直线EF与PQ相交于点A,记EF,PQ的斜率分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
(i)设EF的中点为G,PQ的中点为H,证明:存在唯一常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f132407bf1cc9d1f460d50f1b0547993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43b3fa41635da8da11d6c04287ff7513.png)
(ii)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/129fa211eb0cfb3968d38c3c90249842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7560c67fac3a45cf25ec33aa3ca52519.png)
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10 . 复数
的虚部为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe0e0f81146ffd424025c4f0b46837f1.png)
A.![]() | B.![]() | C.1 | D.2 |
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