14-15高二上·黑龙江牡丹江·期中
名校
1 . 已知直线
的参数方程:
(
为参数),曲线
的参数方程:
(
为参数),且直线交曲线
于
,
两点.
(1)将曲线
的参数方程化为普通方程,并求
时,
的长度;
(2)已知点
,求当直线倾斜角
变化时,
的范围.
![](https://img.xkw.com/dksih/QBM/2018/7/10/1985430294839296/1986211897139200/STEM/cebe3e0e4e6c43cba679cd379a11b64a.png?resizew=9)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b6357b8d6043e32f68f4d652e58853.png)
![](https://img.xkw.com/dksih/QBM/2018/7/10/1985430294839296/1986211897139200/STEM/44fdb4c1d9e84577bd56e10f0806a03f.png?resizew=9)
![](https://img.xkw.com/dksih/QBM/2018/7/10/1985430294839296/1986211897139200/STEM/28a10f00f0a74d66a663804154770873.png?resizew=16)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dcf6b822c3fa19cd715a9783be97234.png)
![](https://img.xkw.com/dksih/QBM/2018/7/10/1985430294839296/1986211897139200/STEM/3fc694a87ea84889ba447499be2cf6f4.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2018/7/10/1985430294839296/1986211897139200/STEM/28a10f00f0a74d66a663804154770873.png?resizew=16)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)将曲线
![](https://img.xkw.com/dksih/QBM/2018/7/10/1985430294839296/1986211897139200/STEM/28a10f00f0a74d66a663804154770873.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2018/7/10/1985430294839296/1986211897139200/STEM/5162bd49efdd4255bfe1036229bc5fe7.png?resizew=43)
![](https://img.xkw.com/dksih/QBM/2018/7/10/1985430294839296/1986211897139200/STEM/070a49e5db284929bd4f6efa7645449a.png?resizew=31)
(2)已知点
![](https://img.xkw.com/dksih/QBM/2018/7/10/1985430294839296/1986211897139200/STEM/1b9b47de4fe74f1293616f0273803598.png?resizew=44)
![](https://img.xkw.com/dksih/QBM/2018/7/10/1985430294839296/1986211897139200/STEM/1fadfdbc1d934aaab1b7ec22364bae0d.png?resizew=13)
![](https://img.xkw.com/dksih/QBM/2018/7/10/1985430294839296/1986211897139200/STEM/32810b87d0b04a359966be8a6a2dbed6.png?resizew=61)
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2018-07-11更新
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5卷引用:【校级联考】海南省华中师大琼中附中、屯昌中学2019届高三上学期期中联考数学(理科)试题