名校
解题方法
1 . 已知
是椭圆
的左顶点,且
经过点
.
(1)求
的方程;
(2)若直线
与
交于
两点,且
,求弦
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e788c747c01bb744d887029acaefee87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c6162828793e697cb1ad643b287c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82acfc83fac146723a9e26a9ec191595.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/764ab1262baa09cd62fb6ddba39df2ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3a1467ecf286e3cadaf5aa006606f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/761aa99382ad5f06df9fcd021bd7fada.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2023-12-22更新
|
893次组卷
|
5卷引用:江苏省泰州市兴化市2024届高三上学期期末适应性考试数学试题
名校
解题方法
2 . 如图,三棱锥
中,所有棱长均为6,
,
分别是
,
的中点,
在
上,
在
上,且有
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/22/ff096fe6-3283-4f18-9e83-7b8bb148467f.png?resizew=178)
(1)证明:直线
,
,
相交于一点;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bba4af8c208559d62dcf2ddfb4e1d19.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/22/ff096fe6-3283-4f18-9e83-7b8bb148467f.png?resizew=178)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
您最近一年使用:0次
2023-12-22更新
|
331次组卷
|
2卷引用:江苏省南通市如东高级中学2024届高三上学期期中学情检测数学试题
名校
3 . 已知正三棱柱
的各棱长都为1,
为
的中点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.直线![]() ![]() |
B.![]() ![]() |
C.二面角![]() ![]() |
D.若棱柱的各顶点都在同一球面上,则该球的表面积为![]() |
您最近一年使用:0次
2023-12-21更新
|
522次组卷
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4卷引用:江苏省南通市如东高级中学2024届高三上学期期中学情检测数学试题
名校
解题方法
4 . 已知
分别为双曲线
的左、右焦点,过
且与双曲线的一条渐近线平行的直线交双曲线于点
,若
,则双曲线的离心率为
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fbbd216b473c4fb368f998181884bc9.png)
![](https://img.xkw.com/dksih/QBM/2023/12/21/3393851043504128/3394092748578816/STEM/0e5e3109b676453ea0921de5bd56d82f.png?resizew=4)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-12-21更新
|
960次组卷
|
5卷引用:江苏省镇江市扬中市第二高级中学2024届高三上学期期末模拟数学试卷(二)
名校
解题方法
5 . 如图,直三棱柱
中,
为等腰直角三角形,
,E,F分别是棱
上的点,平面
平面
,M是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/130f51e7-22c1-4148-886e-06e411f590ef.png?resizew=136)
(1)证明:
平面
;
(2)若
,求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d89ba4036a5d18ec4abed44d7fd8e89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8e86e3991200297ad172455e5ea93f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51838e395dfc9d9ef597d9e01f46272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/130f51e7-22c1-4148-886e-06e411f590ef.png?resizew=136)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0684e0b09b04661c602437982c0397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d557872d3299577be8c5872ba1ae5b59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87c0bfeadcf17b2a45896071f07a4a5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
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2023-12-20更新
|
643次组卷
|
4卷引用:江苏省无锡市南菁高级中学2024届高三上学期期末模拟数学试题
6 . “
”是“
”的( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f59001d2e153130a2050fa8ab9ce6e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
您最近一年使用:0次
解题方法
7 . 已知抛物线
的焦点到准线间的距离为2,且点
抛物线C上.
(1)求m的值;
(2)若直线l与抛物线C交于A,B两点,且
,
于点D,
,求DQ的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e23b74ed51912d236727c0ee5e3e64.png)
(1)求m的值;
(2)若直线l与抛物线C交于A,B两点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83640592853a53872d7af69c0cffc1bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545e18836bc7fee22f8f813a6f525d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a291e0d0e2f620a15826a1aa3c04bc37.png)
您最近一年使用:0次
解题方法
8 . 已知
,
分别为双曲线
的左、右焦点,若过点
与双曲线C的渐近线
垂直的直线分别交渐近线
和双曲线C的左支于点M,E,且
,则C的离心率为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7e2443503354e2ff42b25b6c2e59d00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac89d45e79b10741d93a9443c70adde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac89d45e79b10741d93a9443c70adde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1a09a7b4daaf0e24dd1b12aa0f25fa7.png)
您最近一年使用:0次
解题方法
9 . 如图,在四棱锥
中,已知
平面
,且四边形
为直角梯形,
,
,
.
与平面
所成二面角的余弦值;
(2)若点Q满足
,当直线CQ与DP所成角最小时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/666c7e13a7999bd5970c1e478a665935.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3b10835116b9b777a666b438c907b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/829018a6ca0aff95d89e3f7cd943274e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)若点Q满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c42435883a3d8932c68d167b507f7f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
名校
解题方法
10 . 在平面直角坐标系xOy中,椭圆
和抛物线
交于点A,B,点P为椭圆的右顶点.若O、A、P、B四点共圆,则椭圆离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ab4e1bb9ab2b15c2c4e96a620fb656b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-12-19更新
|
1396次组卷
|
6卷引用:江苏省镇江市扬中市第二高级中学2024届高三上学期期末模拟数学试题(一)
江苏省镇江市扬中市第二高级中学2024届高三上学期期末模拟数学试题(一)江苏省苏州市部分高中2024届高三上学期12月联考数学试题(已下线)模块一 专题2 解析几何(1)广东省珠海市第一中学2024届高三上学期大湾区期末预测数学试题(一)江苏省镇江市扬中市第二高级中学2023-2024学年高二上学期期末模拟数学试题(二)(已下线)专题14 椭圆的离心率求算问题(期末选择题14)2023-2024学年高二数学上学期期末题型秒杀技巧及专项练习(人教A版2019)