1 . 如图,已知直线与抛物线
交于A,B两点,且
交AB于点C,点C的坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/3ca2146f-7757-4696-b74d-54ff957c9413.png?resizew=157)
(Ⅰ)求直线AB的的方程;
(Ⅱ)设点D是AB的中点,若点D到抛物线
的准线的距离等于7,求p的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc8b65205560c499912ac833ef68119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/771b610e4ddefa739a985d1e5462ce5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7012a2444ec4092aa27016df9a1db2a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/3ca2146f-7757-4696-b74d-54ff957c9413.png?resizew=157)
(Ⅰ)求直线AB的的方程;
(Ⅱ)设点D是AB的中点,若点D到抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dc8b65205560c499912ac833ef68119.png)
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解题方法
2 . 如图,在四棱锥
中,侧面
底面
,底面ABCD是矩形,
, E,F分别是棱PC,PD的中点.
![](https://img.xkw.com/dksih/QBM/2019/11/28/2343719880220672/2394537964994560/STEM/322784e87f4f4274a39d233c4ff4a91e.png?resizew=299)
(Ⅰ)求证:
;
(Ⅱ)求证:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a4426db778693c875e2dca9220875d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f6967901d6c855864df01e7bf7a15c.png)
![](https://img.xkw.com/dksih/QBM/2019/11/28/2343719880220672/2394537964994560/STEM/322784e87f4f4274a39d233c4ff4a91e.png?resizew=299)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb8df9fecaa0b266568ad35fb8f0e019.png)
(Ⅱ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a22d6b860f06fe23618b0d3de6768fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
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3 . 已知圆心为
的圆C经过点
.
(Ⅰ)求圆C的标准方程;
(Ⅱ)若直线
与圆C交于A,B两点,且
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011b7f62f2f0b0973a8bdcdfffd1d0c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c578fde8eea8b7e928157fa454064a73.png)
(Ⅰ)求圆C的标准方程;
(Ⅱ)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e508910a802bc5fdefd8e86721f30ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0907a673d52825cd7df84b400972d4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2020-02-08更新
|
268次组卷
|
5卷引用:重庆市大足区2018-2019学年高二上学期期末数学(理)试题
解题方法
4 . 已知直线
的斜率为
,且经过点
.
(Ⅰ)求直线
的方程,并把它化成一般式;
(Ⅱ)若直线
:
与直线
平行,求m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d78fd95f89dec2d373fa57f02acd739f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76813d9d531d7a07f4dc86bfdfd2515c.png)
(Ⅰ)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(Ⅱ)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09c1f279d63b88e616cf120cc431e5cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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5 . 一水平放置的平面图形,用斜二测画法画出它的直观图是如图所示的
,若
,
,
,则原平面图形的面积是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/824adc80af53a357c4972cd5f7300e1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d81587cb1120973df8b124b7f0d8c70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56bce45a98d610de201f049edfad498a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795ab956c7507b26a9bacb7c2cf099b.png)
![](https://img.xkw.com/dksih/QBM/2019/11/28/2343719880220672/2394537964847105/STEM/b5ad4187-3dbe-4531-b28a-0092850e0e50.png)
您最近一年使用:0次
名校
6 . 在三棱锥
中,侧面PBC和底面ABC都是边长为2的正三角形,若
,则侧棱
与底面ABC所成的角的大小是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75dc5b9679ae83920b94dbdfd14b0648.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fd3eb538f36e6e722e4ce125266b99b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
您最近一年使用:0次
2020-02-08更新
|
219次组卷
|
2卷引用:重庆市大足区2018-2019学年高二上学期期末数学(理)试题
名校
7 . 双曲线
的渐近线方程是________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e1fa37c4c826b5dcfebe86ab6177906.png)
您最近一年使用:0次
2020-02-08更新
|
204次组卷
|
4卷引用:重庆市大足区2018-2019学年高二上学期期末数学(理)试题
8 . 如图,已知动点P在正方体
的面
及其边界上运动,若该动点P到棱
与
的距离相等,则动点P的轨迹是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/cfac5163-f5e8-49da-b0cc-1317e505f0f9.png?resizew=170)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59a80427c5520818aa57e4de7bb5ce7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/cfac5163-f5e8-49da-b0cc-1317e505f0f9.png?resizew=170)
A.一条线段 | B.一段圆弧 | C.一段抛物线弧 | D.一段椭圆弧 |
您最近一年使用:0次
2020-02-08更新
|
195次组卷
|
2卷引用:重庆市大足区2018-2019学年高二上学期期末数学(理)试题
解题方法
9 . 已知圆柱的底面直径与高都等于球的直径,若该球的表面积为
,则圆柱的侧面积为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95265f94a8eb7f76b5db6875246a091d.png)
您最近一年使用:0次
2020-02-08更新
|
703次组卷
|
7卷引用:重庆市大足区2018-2019学年高二上学期期末数学(理)试题
解题方法
10 . 某四面体的三视图如图所示,则该四面体的表面积是( )
![](https://img.xkw.com/dksih/QBM/2019/11/28/2343719880220672/2394537964789760/STEM/b19c04f1366147f49d2ff29e02676bf8.png?resizew=413)
![](https://img.xkw.com/dksih/QBM/2019/11/28/2343719880220672/2394537964789760/STEM/b19c04f1366147f49d2ff29e02676bf8.png?resizew=413)
A.![]() | B.![]() | C.![]() | D.![]() |
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