解题方法
1 . 已知点
,且
是抛物线
的焦点,
为
上任意一点,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f10d362b95ce7ac5b18fb4d1037fce59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7ad3432ac96b0a38beaa7f2edc3499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/508734095955bb96d52f37be4e681700.png)
A.3 | B.4 | C.5 | D.6 |
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解题方法
2 . 古希腊几何学家阿波罗尼斯证明过这样一个命题:平面内到两定点的距离之比为定值![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
的点的轨迹是圆,后来,人们将这个圆以他的名字命名,称为阿波罗尼斯圆,简称阿氏圆.已知在平面直角坐标系
中,
,
,若点
是满足
的阿氏圆上的任意一点,点
为抛物线
上的动点,
在直线
上的射影为
,则
的最小值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b305c63a688a9b9507ae338c0c38da8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93c5c4a3a2a0692da41bd823eca01a37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd0b180e818c6bad94e07aec482b7d91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3dc79197932c3d12db7e42ecd9f309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b871eae04a8d29a655fdf9a23f77e58b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a089c207e39a24d0d82aa853ac2bbb8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7894c8d0bc91bae073081337390f925d.png)
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解题方法
3 . 过抛物线
的焦点F且斜率为
的直线l交抛物线于点A、B.若
,且
,则k的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6bdac20e214b2cb3bd07f8d4778dcca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf82f3643e5ae674e16456be583f0c24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65844ad7d410463e70288b6d20a5f4c8.png)
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解题方法
4 . 已知抛物线
,的焦点为F,P点在抛物线上,Q点在圆C:
上,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/290a56449ad6dd65aec7525c94273f59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de54109b01743b0c1c2b3a05b94f799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d968044241d03105c05c40fd6b94264.png)
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5 . 已知抛物线
的焦点为
,点A是抛物线上的动点.设点
,当
取得最小值时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c58495200066a9b57cda429cd84fdc51.png)
_____________________ ;此时
内切圆的半径为_____________________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/322b7ce3c6a18d4fbbb4c68258330fca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce57b1ece87c905c1482cd32efb649d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c58495200066a9b57cda429cd84fdc51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004104bafb5f30338123d4ea2b7fedde.png)
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解题方法
6 . 已知拋物线
的焦点为
上任意一点
到
的距离与到点
的距离之和的最小值为3.
(1)求拋物线
的标准方程;
(2)已知过点
的直线
与
分别交于点
与点
,延长
交于点
,线段
与
的中点分別为
.
①证明:点
在定直线上;
②若直线
,直线
的斜率分别为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa877db8dc1b03f1581106dfd5211ac4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/903b871aebed6b53092eade5259eaa7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3252b27660dbd50af37ed270dd976191.png)
(1)求拋物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
(2)已知过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/098a3e7d1f1890863b7483a98b618119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbdb21011ea821b91d539cb763aac649.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5fa8bd3792adb4f75697357808cd50c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.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/7789a500686c7a73770404ead6af0590.png)
①证明:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
②若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ce08b357f11ef44c3e8207ac574422a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f65dbed884e2248ec075655c684aa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4757181824e15e0f21e5bdd55448783.png)
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解题方法
7 . 在直角坐标系
中,已知点
,动点
满足线段
的中点在曲线
上,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdd5e40ccafad18dcc7d1f28ead0b0cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc97895f0f42814de858ba198de26a0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44397211d1486df32b56d8d213695170.png)
A.2 | B.3 | C.4 | D.5 |
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解题方法
8 . 设
,当
变化时
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd54a4134aef3f68a9c068ee4dade284.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf27e0ac992edacdf11c649113e9445e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
9 .
分别是抛物线
和
轴上的动点,
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eab4cf09670861e61d67cbe70bb149a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cca88f5d8db11f6a16cbcb84359caef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/627d8edfe31fc3e66841387de72ff76c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eddf3618e6f5128a446be7667e9f7233.png)
A.5 | B.![]() | C.![]() | D.2 |
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解题方法
10 . 抛物线
上的点到其准线的距离与到直线
的距离之和的最小值为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c608def11fa0e2b34f05592ef1d11fd8.png)
A.![]() | B.![]() | C.4 | D.5 |
您最近一年使用:0次
2024-07-05更新
|
359次组卷
|
2卷引用:2024届福建省莆田市第一中学高三下学期5月模拟考试数学试题