真题
1 . 在平面直角坐标系
中,已知双曲线
.
(1)设F是C的左焦点,M是C右支上一点. 若|MF|=2
,求过M点的坐标;
(2)过C的左顶点作C的两条渐近线的平行线,求这两组平行线围成的平行四边形的
面积;
(3)设斜率为
的直线l2交C于P、Q两点,若l与圆
相切,
求证:OP⊥OQ;
![](https://img.xkw.com/dksih/QBM/2012/6/14/1570886267199488/1570886272860160/STEM/c96a88c11c7f4541ac6c11a71df22ed8.png)
![](https://img.xkw.com/dksih/QBM/2012/6/14/1570886267199488/1570886272860160/STEM/25814adb35d341818ae67f9bc3511a6c.png)
(1)设F是C的左焦点,M是C右支上一点. 若|MF|=2
![](https://img.xkw.com/dksih/QBM/2012/6/14/1570886267199488/1570886272860160/STEM/ec6c35e612194374bc39d17880a2e35e.png)
(2)过C的左顶点作C的两条渐近线的平行线,求这两组平行线围成的平行四边形的
面积;
(3)设斜率为
![](https://img.xkw.com/dksih/QBM/2012/6/14/1570886267199488/1570886272860160/STEM/07b5840f8cbd413b913ffeca0289c8e2.png)
![](https://img.xkw.com/dksih/QBM/2012/6/14/1570886267199488/1570886272860160/STEM/6abee543db7b43d097ad398e60db695e.png)
求证:OP⊥OQ;
您最近一年使用:0次
11-12高三·四川成都·阶段练习
解题方法
2 . 在平面直角坐标系
中,已知
的顶点
、
,
为动点,且
.记动点
的轨迹为曲![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(I)求曲线
的方程;
(II)设
是既不与
平行也不与
垂直的直线,且原点
到直线
的距离为
,
与曲线
相交于不同的两点
、
,问
的值是否为定值?若为定值,求出此定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4c1016bf87b416cff0f3fa79d3ef9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/513eafd10fa1ec0196562865517e0b09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55388e2f910665e103b168af61c1fa76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(I)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(II)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cd7b9abb86c98d2ab1b6126341c017.png)
您最近一年使用:0次
2012·广西南宁·二模
解题方法
3 . 已知
,点P满足|PF1|-|PF2|=2,记点P的轨迹为S,过点F2作直线
与轨迹S交于P、Q两点,过P、Q作直线
的垂线PA、QB,垂足分别为A、B,记
.
(Ⅰ)求轨迹S的方程;
(Ⅱ)设点
,求证:当λ取最小值时,
的面积为9.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def49b3dafec8819c5ad298c7bae29a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b5db4279de94df31018c143b16c740a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7c491d8fcf4f973d719f9684442843b.png)
(Ⅰ)求轨迹S的方程;
(Ⅱ)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ee28c74d5ac67365338e082ac02f17d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba08ef7e19164e78dc0dc08fe4395d37.png)
您最近一年使用:0次
2012·广西南宁·二模
解题方法
4 . 已知
,动点P满足
,记动点P的轨迹为S,过点
作直线l与轨迹S交于P、Q两点,过P、Q作直线
的垂线PA、QB,垂足分别为A、B,记
.
(Ⅰ)求轨迹S的方程;
(Ⅱ)设点
,求证:当
取最小值时,
的面积为9.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72ba951ce58ff7fb59c57e2d349fdc4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57fea2227147641b0ce513d419a02309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b650820d7bed48ed67a2869ad8c65ff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc0faa337087f860a2f15f12f6fcfad.png)
(Ⅰ)求轨迹S的方程;
(Ⅱ)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22c8c934fb978c8840bed9680408977c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca1f167ece5d18225840af97b39af9e4.png)
您最近一年使用:0次
11-12高三·广东佛山·阶段练习
5 . 已知圆
:
,圆
:
,圆
、
关于直线l对称.
(1)求直线l的方程;
(2)直线l上是否存在点Q,使点Q到点
的距离减去点Q到点
的距离的差为4,如果存在,求出点Q的坐标;如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81338417602aa3f61f2f62a63fb1184a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa9dd4d452ba05247ea59caf9ad9fa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(1)求直线l的方程;
(2)直线l上是否存在点Q,使点Q到点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e58c515f1e5b308eb7b3aa708db7ec0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c781a586eabe6d875c1eb1cb733c6dc.png)
您最近一年使用:0次
11-12高三·广东佛山·阶段练习
6 . 已知圆
,圆
,动点
到圆
上点的距离的最小值相等.
(1)求点
的轨迹方程;
(2)点
的轨迹上是否存在点
,使得点
到点
的距离减去点
到点
的距离的差为
,如果存在求出
点坐标,如果不存在说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bebafd7310fc98dd2701ccbb80ad1ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec27fb33db26fc3a318d7d87bec907e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21e9feabc99f62ee569b460e61526e2e.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e58c515f1e5b308eb7b3aa708db7ec0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c781a586eabe6d875c1eb1cb733c6dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
2011·河北衡水·一模
7 . 已知动圆P过点
并且与圆
相外切,动圆圆心P的轨迹为W,过点N的直线
与轨迹W交于A、B两点.
(1)求轨迹W的方程;
(2)若
,求直线
的方程;
(3)对于
任意一确定的位置,在直线
上是否存在一点Q,使得
,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6678ce473e9fd055f294f99805fe0032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/805a58fae633ae87df256c0092c8de3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)求轨迹W的方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd135b55fe4de0acbc206978c9050a82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)对于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b650820d7bed48ed67a2869ad8c65ff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5294d44895e9ccdcccc47c2d61a777a.png)
您最近一年使用:0次
2011·广东惠州·一模
名校
8 . 已知
的边
边所在直线的方程为
满足
, 点
在AC边所在直线上且满足
.
![](https://img.xkw.com/dksih/QBM/2011/3/11/1570035087941632/1570035093225472/STEM/4b6887b4d3da4e70a8bf3906d433ca0b.png?resizew=206)
(I)求AC边所在直线的方程;
(II)求
外接圆的方程;
(III)若动圆
过点
,且与
的外接圆外切,求动圆
的圆心的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da5808bd173aa3d6d192f069c043ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f6677760be85acdde9f1bc701fac972.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b19cb3172add43d4335f099ac641776.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c1264366a4b6705160d7a6f733d71e7.png)
![](https://img.xkw.com/dksih/QBM/2011/3/11/1570035087941632/1570035093225472/STEM/4b6887b4d3da4e70a8bf3906d433ca0b.png?resizew=206)
(I)求AC边所在直线的方程;
(II)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
(III)若动圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f0b5a29664124050a4033b08dbc0f54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2011·甘肃武威·二模
解题方法
9 . 已知
,
是
,
轴正方向的单位向量,设
,
且满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4af493132a1d76645e826fd4c732b0.png)
(1)求点
的轨迹
的方程.
(2)若直线
过点
且法向量为
,直线与轨迹
交于
,
两点.点
,无论直线
绕点
怎样转动,
是否为定值?如果是,求出定值;如果不是,请说明理由.并求实数
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f054a36f990c595a8093a92558646e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f33ee2dfbdb7101880df4f245c80dfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d8fbac4fee92272c41f96d482082376.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ed4c42f440d751a71e02a6f0e01d182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4af493132a1d76645e826fd4c732b0.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fd15503ee692f8286b0312f7c6f0cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a06f1133c433bc599a5a714cea55ded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1cf8af6e62058cc4e2d83d5da7f4c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62347c54707c6874115c08aa5062b1d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
您最近一年使用:0次
10-11高三·黑龙江绥化·阶段练习
解题方法
10 .
是双曲线的左右焦点,
是双曲线上一点,且
,
,又离心率为
,求双曲线方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7affd8a277498fd39b4a2a95d649f45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63238234b94a05605135a5aafc5cca67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
您最近一年使用:0次