题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201453-63786.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201453-47339.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201453-97967.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201453-92273.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201453-15911.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201454-37686.png)
A.1 | B.![]() | C.![]() | D.2 |
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201454-17198.png)
解析
试题分析:体积转化法.
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201455-22901.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201455-51721.png)
因为
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201455-80832.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201455-29154.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201456-58547.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201456-29483.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201456-64162.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201456-62680.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201456-60238.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201431-83483.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201431-59294.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201432-67901.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201432-30459.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201432-29331.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201432-76387.png)
成等差数列.
(1)求点
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201432-84379.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201433-14311.png)
(2)若曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201433-93151.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201433-95321.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201433-84814.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201434-18627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201433-93151.png)
求直线
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201434-61628.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201434-57387.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201421-72679.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201421-56174.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201422-83947.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201422-80019.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201422-71869.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201422-28440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201422-63429.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201423-26888.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201423-33475.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201423-86373.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201423-48154.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201424-51907.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201424-11417.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201424-48766.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201415-99020.png)
A.1 | B.2 | C.3 | D.4 |
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201409-85841.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201409-86888.png)
(1)证明:|PM|·|PN|为定值;
(2)O为坐标原点,求四边形OMPN面积的最小值.
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201402-33137.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201402-67541.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201402-32964.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201403-31105.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201403-22296.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201403-73081.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201403-58962.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201403-87960.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201404-41047.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191022/20191022201404-25730.png)
A.点![]() ![]() |
B.直线![]() ![]() |
C.三棱锥![]() |
D.![]() ![]() |
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