题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042328-73894.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042328-94016.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042329-89350.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042329-87127.png)
(1)化
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042329-76535.png)
(2)过曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042330-32093.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042330-95604.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042330-33358.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042330-77831.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042331-63402.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042331-63402.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042331-10229.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042330-77831.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042331-64133.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042330-32093.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042331-48251.png)
解析
试题分析:本题考查参数方程与普通方程的互化,考查学生的转化能力和计算能力.第一问,利用参数方程与普通方程的互化方法转化方程,再根据曲线的标准方程判断曲线的形状;第二问,根据已知写出直线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042330-33358.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042330-77831.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042331-63402.png)
试题解析:⑴
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042332-24482.png)
曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042330-77831.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042331-64133.png)
曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042330-32093.png)
⑵曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042330-32093.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042332-90473.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042330-33358.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042332-33012.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042332-10404.png)
将其代入曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042330-77831.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042333-31980.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042331-63402.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042333-82345.png)
则
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042333-16666.png)
所以
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042333-34287.png)
核心考点
试题【已知曲线(为参数),(为参数).(1)化的方程为普通方程,并说明它们分别表示什么曲线;(2)过曲线的左顶点且倾斜角为的直线交曲线于两点,求.】;主要考察你对常见曲线的参数方程等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042324-86335.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042324-92814.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042317-60226.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042317-97960.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042311-51667.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042311-57342.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042311-15816.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042312-82627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042312-77817.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042311-15816.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042306-75582.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042307-50116.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042307-43487.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042307-25615.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042307-51405.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042306-75582.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042300-95216.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191108/20191108042300-61917.png)
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