如图所示,已知点
是抛物线
上一定点,直线
的倾斜角互补,且与抛物线另交于
,
两个不同的点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/80984a12-c5be-4d0c-bdff-f177a3aa5f92.png?resizew=172)
(1)求点
到其准线的距离;
(2)求证:直线
的斜率为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e35863acd3e2ad4e5eb056952b9e25a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f1bd115fa8e48e214fd2b90b0df6a10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/80984a12-c5be-4d0c-bdff-f177a3aa5f92.png?resizew=172)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
更新时间:2019-11-12 10:22:07
|
相似题推荐
【推荐1】设
,
两点在抛物线
上,
是
的垂直平分线.
(1)若直线
经过抛物线的焦点
,求证:
;
(2)当直线
的斜率为1时,求
在
轴上的截距的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b1183df9f26985febdc844cda75ed4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c2e41c64ac5508a9ba27b697122d6d5.png)
(2)当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】如图,已知抛物线
经过点
,
是抛物线的焦点,以
为始边,
为终边的角
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/7d0a1c6c-9c81-4a7f-9212-50abd5c02dc2.png?resizew=118)
(1)求抛物线的标准方程;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1c88fb6041c52d47c495cb4be352708.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfbd44d7c90a27479a52fd670df005cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2273ae1ee99cec9c1304323bc9ebf75f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bac87db382874f77ec5720a8023f9dd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/7d0a1c6c-9c81-4a7f-9212-50abd5c02dc2.png?resizew=118)
(1)求抛物线的标准方程;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faac098e58968e51ce2aa41a3eb38d95.png)
您最近一年使用:0次
【推荐1】已知直线
的方向向量与直线
的方向向量共线且过点
;
(1)求
的方程;
(2)若
与抛物线
交于点
为坐标原点,设直线
,直线
的斜率分别是
;求
及
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/089243ad31b799d65b9e86ec2a116188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f739a29d4fbb88ba1337e8456ef1f8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/876856cdb3900b117f280615c185d347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad608ff2250d3f93f509ef52fff7611.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b881044b5c73db6fcce110525741b02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acb8956ebcde7cf0f1011a2fc1888e15.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,在平面直角坐标系
中,设点
,直线
:
,点
在直线
上移动,
是线段
与
轴的交点,
.
![](https://img.xkw.com/dksih/QBM/2011/9/6/1570303016714240/1570303021875200/STEM/22e641ecbb4e433bae532e55117c769f.png?resizew=145)
(I)求动点
的轨迹的方程
;
(II)设圆M过A(1,0),且圆心M在曲线C上,
是圆M在
轴上截得的弦,当M运动时弦长
是否为定值?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7795aec93c2c7ac2fd93e6747ca6516c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb7b76d897de678faaf8221bafe217d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c98a7f3a8bf384b1dfc1d34aebd46d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b43bede2df427e908ec8280af9fea683.png)
![](https://img.xkw.com/dksih/QBM/2011/9/6/1570303016714240/1570303021875200/STEM/22e641ecbb4e433bae532e55117c769f.png?resizew=145)
(I)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://img.xkw.com/dksih/QBM/2011/9/6/1570303016714240/1570303021875200/STEM/5775aac8fe4041cb9b3b3da9249893d8.png?resizew=16)
(II)设圆M过A(1,0),且圆心M在曲线C上,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08cce6cac0fdd4b1a434af8bcaec8fef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ab884b4fd41f26f2482ea49a6e62c75.png)
您最近一年使用:0次