名校
解题方法
1 . 已知点
在抛物线
上,直线
与
交于
两点,
为坐标原点,且
.
(1)求抛物线
的焦点到准线的距离;
(2)求
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/081cd41dab0f2a8f84b0e9f1df4843fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e97afdeaa1d4433cffe5005446fcbbbb.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/0ae6f48b9a53c0155a692509cf31f7e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20ccc37b189fa2cbc269ca0b233dac37.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
您最近一年使用:0次
2022-12-31更新
|
681次组卷
|
2卷引用:辽宁省大连市2022-2023学年高二上学期期末数学试题
2 . 已知圆M:
与抛物线E:
相交于四点A、B、C、D,且在四边形ABCD中,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/764517e7-12bf-4ca6-b052-5f1bbdcfc31d.png?resizew=191)
(1)求实数m的取值范围;
(2)设AC与BD相交于点G,
面积为
,求点G的坐标及m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d81c3f6d779ef7b73a11cea08609e3af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1aa2a5e31d553cfab95eed01ec715d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/3/764517e7-12bf-4ca6-b052-5f1bbdcfc31d.png?resizew=191)
(1)求实数m的取值范围;
(2)设AC与BD相交于点G,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ef4b54df90e5528f155ab2902a2eea2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ca820a456491348e72587e4fe10bc6.png)
您最近一年使用:0次
3 . 已知抛物线C:
,点
.
(1)设斜率为1的直线l与抛物线C交于A,B两点,若
的面积为
,求直线l的方程;
(2)是否存在定圆M:
,使得过曲线C上任意一点Q作圆M的两条切线,与曲线C交于另外两点A,B时,总有直线AB也与圆M相切?若存在,求出m的值,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9cfb23a9e07213cb76990dbedfc7feca.png)
(1)设斜率为1的直线l与抛物线C交于A,B两点,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(2)是否存在定圆M:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c150ea644eb806de90fca5f7b041db.png)
您最近一年使用:0次
2022-11-30更新
|
561次组卷
|
3卷引用:辽宁省实验中学2022-2023学年高二上学期第二次阶段测试数学试题
4 . 已知抛物线C:
的焦点为F,
是抛物线C上的点,且
.
(1)求抛物线C的方程;
(2)已知直线l交抛物线C于M,N点,且MN的中点坐标为
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c2f156b05838deaae6a35acad242af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63400c678f049911eec1b466aecfa85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58acf95344d6e5759cb2e05a6e61a151.png)
(1)求抛物线C的方程;
(2)已知直线l交抛物线C于M,N点,且MN的中点坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2c7b74fd862d7e3f35e40ae1f626c4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a33181b27b10690b4913595f8c1f46e.png)
您最近一年使用:0次
2022-11-23更新
|
545次组卷
|
6卷引用:辽宁省凌源市2022-2023学年高二上学期11月月考数学试题
5 . 已知抛物线C:
的焦点为F,
是抛物线C上的点,且
.
(1)求抛物线C的方程;
(2)已知直线l交抛物线C于M,N两点,且
的中点为
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ccb9a7686815cadfb5dca40e7ccab5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d609cb7f8b4d79e8b65c0b8a0672d240.png)
(1)求抛物线C的方程;
(2)已知直线l交抛物线C于M,N两点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/540d9883ecd54bf158b6db4989948797.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a33181b27b10690b4913595f8c1f46e.png)
您最近一年使用:0次
6 . 已知抛物线
的焦点为F,点P在抛物线上,O为坐标原点,且
.
(1)抛物线E的标准方程;
(2)如图所示,过点
和点
分别作两条斜率为k的平行弦分别和抛物线E相交于点A,B和点C,D,得到一个梯形ABCD.记梯形两腰AD和BC的斜率分别为
和
,且
.
![](https://img.xkw.com/dksih/QBM/2022/5/17/2981554522841088/2982714736459776/STEM/902a180e-205e-4fce-835e-790f201c0a3d.png?resizew=142)
(i)试求实数k的值;
(ii)若存在实数
,使得
,试求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b527ec9f92467b8f24554a2a67ee987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c8392d5bdd018d13d60a803899fb74.png)
(1)抛物线E的标准方程;
(2)如图所示,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/115f63c0df02147bb911a1c267576777.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee9b0cb76c47163d199a31bfa747cff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9972e1d4dfa4e311985876edccd70f3.png)
![](https://img.xkw.com/dksih/QBM/2022/5/17/2981554522841088/2982714736459776/STEM/902a180e-205e-4fce-835e-790f201c0a3d.png?resizew=142)
(i)试求实数k的值;
(ii)若存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8a532bd96f597e97531893ba3432b82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
7 . 直线
交抛物线
于
,
两点,过
,
作抛物线的两条切线,相交于点
,点
在直线
上.
(1)求证:直线
恒过定点
,并求出点
坐标;
(2)以
为圆心的圆交抛物线于
四点,求四边形
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c287201dc8f4b7e1a8dd41920654656.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42102c1c07562853219ca5918803a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92002afa0b414eae387a91207c629398.png)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
(2)以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
您最近一年使用:0次
2022-04-09更新
|
1503次组卷
|
4卷引用:辽宁省大连育明高级中学2022届高三第一次模拟考试数学试卷
辽宁省大连育明高级中学2022届高三第一次模拟考试数学试卷河北省保定市2022届高三一模数学试题(已下线)三轮冲刺卷04-【赢在高考·黄金20卷】备战2022年高考数学模拟卷(新高考专用)河北省部分学校2022届高三下学期5月联考数学试题
解题方法
8 . 已知抛物线
上一点
到焦点F的距离
.
(1)求抛物线C的方程;
(2)过点F且倾斜角为
的直线l与抛物线C交于A,B两点,点M为抛物线C准线上一点,且
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ea1be9b9b6bb12afa7e1ce703d1603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d0906b8ed04857c99a946717f11d3df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59bbf9aa57d151563edfaa7c16e0a65b.png)
(1)求抛物线C的方程;
(2)过点F且倾斜角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3b9a20c31e397ae1dc8a44baf7de91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e33c17fa6f3263fbcbe69f8be9be4e5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a11cb104b04c4e6a1be700e81da279a.png)
您最近一年使用:0次
2022-03-18更新
|
534次组卷
|
3卷引用:辽宁省凌源市2022届高三下学期开学抽测考试数学试题
9 . 已知抛物线
的焦点为
,点
在抛物线上,且
的面积为
(
为坐标原点).
(1)求抛物线
的标准方程;
(2)点
、
是抛物线
上异于原点
的两点,直线
、
的斜率分别为
、
,若
,求证:直线
恒过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/689edb6841f7c6aa4304c5bf88209117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8c3b743769d19231c2165ec275bab1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8f581bf42d3bddaba5d95906e182f32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/1dde8112e8eb968fd042418dd632759e.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/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d0b20880f4f6120dca1efdec01cbd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
10 . 已知抛物线C:
上有一动点
,
,过点P作抛物线C的切线
交y轴于点Q.
(1)判断线段PQ的垂直平分线是否过定点?若过,求出定点坐标;若不过,请说明理由;
(2)过点P作
的垂线交抛物线C于另一点M,若切线
的斜率为k,设
的面积为S,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b1183df9f26985febdc844cda75ed4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee21db6628e4db3f5831370549fa96b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)判断线段PQ的垂直平分线是否过定点?若过,求出定点坐标;若不过,请说明理由;
(2)过点P作
![](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/e99675fa03da205c4499967c9d908412.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d450c4b165925cac91137ef5cc16df9.png)
您最近一年使用:0次
2022-02-15更新
|
1393次组卷
|
5卷引用:辽宁省沈阳市第三十一中学2022-2023学年高二上学期12月月考数学试卷