解题方法
1 . 在正方体
中,点
满足
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1be5693b11b4198a234beb9cf3226d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee72261f6901e62dfd0ffe547406544.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e2e01346f60857ff635bb766802e57.png)
A.当![]() ![]() |
B.当![]() ![]() |
C.当![]() ![]() ![]() ![]() |
D.当![]() ![]() ![]() |
您最近一年使用:0次
名校
2 . 已知
是抛物线
上一点,
为其焦点,点
在圆
上,则
的最小值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54496b64dafe3cc3dc900827e5992f8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98c721c5f9908f94fa6bc10daec38633.png)
您最近一年使用:0次
2018-01-13更新
|
443次组卷
|
2卷引用:山东省莱州市第一中学2020-2021学年高二下学期开学测试数学试题
3 . 已知抛物线
焦点为
,直线
过焦点
且与抛物线
交于
两点,
为抛物线
准线
上一点且
,连接
交
轴于
点,过
作
于点
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b758f0df5dd6de307b07d9118714761.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.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/7789a500686c7a73770404ead6af0590.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9cc822ba36c1cca6f34c6e6c1c689c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/ae67946dd9fdfbba2f363f8da98408d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7384511d0b3717bd2d56fed45d236760.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b758f0df5dd6de307b07d9118714761.png)
您最近一年使用:0次
2017-03-31更新
|
548次组卷
|
5卷引用:2017届山东省平阴县第一中学高三3月模拟考试理数试卷
名校
4 . 过双曲线
(
,
)的右焦点
作渐近线的垂线,设垂足为
(
为第一象限的点),延长
交抛物线
(
)于点
,其中该双曲线与抛物线有一个共同的焦点,若
,则双曲线的离心率的平方为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c2293f93791a597bf0162411f3395f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5599e43a47236ae5dbaf34346440db.png)
您最近一年使用:0次
2016-12-04更新
|
979次组卷
|
2卷引用:2017届山东省实验中学高三第一次诊断数学(理)试卷
名校
5 . 已知点
及抛物线
上一动点
,则
的最小值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62aaf25e3a2e50dcadfb5953c7d14c66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8064ca6915dfe71474dbce4c3e85f230.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 抛物线
的焦点为
,准线为
,
为抛物线
上一点,且
在第一象限,
点
,线段
与抛物线
交于点
,若
的斜率为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bdd3be8e58a9150e5b1e2a43988fd82.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ac3393a57df94a5944642bb8a5d4c02.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2017-05-16更新
|
490次组卷
|
2卷引用:山东省日照市2017届高三下学期第二次模拟考试数学(理)试题
解题方法
7 . 在平面直角坐标系中,已知点
,点B在直线
:
上运动,过点B与
垂直的直线和线段AB的垂直平分线相交于点M.
(1)求动点M的轨迹E的方程;
(2)过(1)中轨迹E上的点P (1,2)作两条直线分别与轨迹E相交于
,
两点.试探究:当直线PC,PD的斜率存在且倾斜角互补时,直线CD的斜率是否为定值?若是,求出这个定值;若不是,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6ff81aedbefa935da289dc632e78eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(1)求动点M的轨迹E的方程;
(2)过(1)中轨迹E上的点P (1,2)作两条直线分别与轨迹E相交于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5e40f31633a3444bfde7187b0808774.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/863226efe54b4273103415677e5de2f7.png)
您最近一年使用:0次
8 . 给出下列命题:
(1)导数
是
在
处取得极值的既不充分也不必要条件;
(2)若等比数列的前
项和
,则必有
;
(3)若
,则
的最小值为
;
(4)函数
在
上必定有最大值、最小值;
(5)平面内到定点
的距离等于到定直线
的距离的点的轨迹是抛物线.
其中正确命题的序号是_____ .
(1)导数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b253b986c6c457a2ade09cd32817a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(2)若等比数列的前
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca3ea9fd708daa63ce786e8a3374f741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b02f266bd253738e315e84231235f0d2.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb279630c002eec7ea4a2a711134fb74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51834f008dc25acdf102c3b6021a26ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
(4)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4776c85b79df196f606d3ebf3697fbc3.png)
(5)平面内到定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631386549c0cec5981a1da47b05e5d25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3aa3adcb154f6144903d456289ecb0f.png)
其中正确命题的序号是
您最近一年使用:0次
名校
9 . 已知点
及抛物线
上一动点
,则
的最小值是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ab4f88962ff2e9f3789134362a84d46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/029d213f131f206f5f3520860de56690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d9dfe06f2b329f18df65f25325d4a38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce59ce74ac9d65317f81f74606a800f9.png)
您最近一年使用:0次
解题方法
10 . 已知
为平面上的动点且
,若P到
轴的距离比到点
的距离小1.
(1)求点P的轨迹C的方程;
(2)设过点
的直线交曲线C与A,B两点,问是否存在这样的实数m,使得以线段AB为直径的圆恒过原点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e2e79843faf62dde86bf858d1e0569.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
(1)求点P的轨迹C的方程;
(2)设过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b62769b7177ef4bc952dc1dd51d6b510.png)
您最近一年使用:0次
2016-12-04更新
|
378次组卷
|
4卷引用:2015-2016学年山东省青岛市胶州市高二上学期期末理科数学试卷