如图,已知A,B,C,D是抛物线
上四个不同的点,且
,设直线
与直线
相交于点P,设
.
![](https://img.xkw.com/dksih/QBM/2021/2/22/2663329410916352/2665039524462592/STEM/28393bca-435b-41c1-b430-57292518cc22.png?resizew=314)
(1)求证:A,P,B三点的横坐标成等差数列;
(2)当直线
经过点
,且
时,若
面积的为
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7704b7570bc87625999309fb5e698439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f7afb6ced0907e420874d108965749d.png)
![](https://img.xkw.com/dksih/QBM/2021/2/22/2663329410916352/2665039524462592/STEM/28393bca-435b-41c1-b430-57292518cc22.png?resizew=314)
(1)求证:A,P,B三点的横坐标成等差数列;
(2)当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e241c20dbb4f324b6491da9f75222c9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2f2d7c81cb44416bcdf59419637682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d754c4ad51e4482e12a615d20a13fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
20-21高二上·浙江绍兴·期末 查看更多[2]
更新时间:2021-02-24 16:59:42
|
相似题推荐
【推荐1】已知抛物线
:
上的点
到焦点
的距离为
.
(1)求点
的坐标及抛物线
的方程;
(2)过点
的任意直线
与抛物线
交于点
,过点
的抛物线
的两切线交于点
,证明:点
在一条定直线上,并求出该定直线的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c2f156b05838deaae6a35acad242af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab085ce98211fa5cbc6dfb88f9b6935a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cda12642d59a5817e8990c43de20535.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
解题方法
【推荐2】已知抛物线
上的点
到焦点的距离为
.
![](https://img.xkw.com/dksih/QBM/2020/6/7/2479348500275200/2479621580308480/STEM/fd38a48101da4c0d857a7046005f35a2.png?resizew=197)
(1)求
的值;
(2)如上图,已知动线段
(
在
的右边)在直线
上,且
,现过
作
的切线,取左边的切点
,过
作
的切线,取右边的切点为
,当
,求
点的横坐标
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/421690fe662cb6e6cd4e6eeaa51daacf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a911c7dea2fe23b73a0e4bdd357abf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d59ab85c075a09d55d69e159e4abb268.png)
![](https://img.xkw.com/dksih/QBM/2020/6/7/2479348500275200/2479621580308480/STEM/fd38a48101da4c0d857a7046005f35a2.png?resizew=197)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)如上图,已知动线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33400b08941f4f9c0ed12b0e0cdff822.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff1c07d3ab5f594be5fffe13ebaaccb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7605ce6f221ce8cad191da0f84a216d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
解题方法
【推荐1】已知圆M:x2+(y-
)2=4与抛物线E:x2=my(m>0)相交于点A,B,C,D,且在四边形ABCD中,AB//CD.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/61229366-6b1f-4cb9-bbc6-fed36e691d35.png?resizew=193)
(1)若
,求实数m的值;
(2)设AC与BD相交于点G,△GAD与△GBC组成蝶形的面积为S,求点G的坐标及S的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/61229366-6b1f-4cb9-bbc6-fed36e691d35.png?resizew=193)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2697bd158b528c992421d24cd7813c4a.png)
(2)设AC与BD相交于点G,△GAD与△GBC组成蝶形的面积为S,求点G的坐标及S的最大值.
您最近一年使用:0次
【推荐2】如图,已知抛物线
和点
,点P到抛物线C的准线的距离为6.
![](https://img.xkw.com/dksih/QBM/2022/5/17/2981204673331200/2981246892580864/STEM/5ce2cec9-f3ee-4b17-b4e6-479edf30afd6.png?resizew=352)
(1)求抛物线C的标准方程;
(2)过点P作直线
交抛物线C于A,B两点,M为线段
的中点,点Q为抛物线C上的一点且始终满足
,过点Q作直线
交抛物线C于另一点D,N为线段
的中点,F为抛物线C的焦点,记
的面积为
,
的面积为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1991b5dc6ebe1f9ed37c1a97966aabf4.png)
![](https://img.xkw.com/dksih/QBM/2022/5/17/2981204673331200/2981246892580864/STEM/5ce2cec9-f3ee-4b17-b4e6-479edf30afd6.png?resizew=352)
(1)求抛物线C的标准方程;
(2)过点P作直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6163721b2a24d30c0d338969de0c0670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a23dff476ddce008f686a26be4adbef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c118858379800688c993a8b61270b356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17e1de0c6dca3c0d5c9207abe780d457.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8c3b743769d19231c2165ec275bab1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c21cbb1c2bcbcb8391ac5a879f2ae0.png)
您最近一年使用:0次
【推荐1】已知
为坐标原点,
为抛物线
:
的焦点,点
在抛物线上,其中
,弦
的中点为
,以
为端点的射线
与抛物线交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/20e2b6c5-7e85-4592-8a97-37ce66022b20.jpg?resizew=150)
(1)若
恰好是
的重心,求
;
(2)若
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb57bb18755127be041d346444a4743e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b170470d02c85c1be9a3faff5eca0de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/20e2b6c5-7e85-4592-8a97-37ce66022b20.jpg?resizew=150)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8112f9185c7d48b015d9cd0525616b31.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acd6dc366f9c7508fc3a2eb2e16ecf3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59c181acb90b4ce140364611a364fa1.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
解题方法
【推荐2】已知抛物线
的焦点
与椭圆
的一个焦点重合,点
在抛物线上,过焦点
的直线
交抛物线于
两点.
(1)求抛物线
的方程以及
的值;
(2)记抛物线
的准线与
轴交于点
,若
,
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/157f5ed9e3057193196d77b9c9be5ac3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54de4418592fc1ce570effcc01209ce8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1c9bdf3a9ca69f4c2e8303f142f0776.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61f20a5abdb5deef164c7d633c2c8fce.png)
(2)记抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/536e6e6e0bf918af146bc292572ac5fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c499a8eceb4949dd64589ba0f8585a8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次