22-23高三上·江苏南通·期末
1 . 如图,在三棱柱
中,底面
是边长为2的正三角形,
,平面
平面ABC,M是棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/20/832aa1d5-53eb-4ac7-bb91-7313755a9f20.png?resizew=195)
(1)证明:
平面
;
(2)若四棱锥
的体积为
,求二面角
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/f44909eeb4d00c099198c3ed677b7b9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21dee56b9f36ba8f76fe67b76383636b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/20/832aa1d5-53eb-4ac7-bb91-7313755a9f20.png?resizew=195)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4557a368725226f2c8ea2efb7d30e478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de9078475c350c04bd97666d808dd55a.png)
(2)若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4fe7e424d4d0d16f2c312188753cc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9052adaffb2d28fd9a3cd737a9b4ef28.png)
您最近一年使用:0次
22-23高三上·江苏南通·期末
名校
解题方法
2 . 在平面直角坐标系xOy中,已知圆E:
和定点
,P为圆E上的动点,线段PF的垂直平分线与直线PE交于点Q,设动点Q的轨迹为曲线C.
(1)求曲线C的方程;
(2)设曲线C与x轴正半轴交于点A,过点
的直线l与曲线C交于点M,N(异于点A),直线MA,NA与直线
分别交于点G,H.若点F,A,G,H四点共圆,求实数t的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f269f3d5e4148989d8897efa29cc60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be92f0e0012a7696c78e3e00513edefd.png)
(1)求曲线C的方程;
(2)设曲线C与x轴正半轴交于点A,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17472f36adda39804d085fb0ed031f85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f7b16d65f1b2b8bea8cf4a83fde925.png)
您最近一年使用:0次
22-23高三上·江苏南通·期末
3 . 在平面直角坐标系xOy中,已知椭圆C:
的左,右焦点分别是
,
,点P是椭圆C上一点,点Q是线段
靠近点
的三等分点,若
,则椭圆的离心率的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](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/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7df99fe6438442a9453fc0c57fb703.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
22-23高三上·江苏南通·期末
解题方法
4 . 在棱长为1的正方体
中,设
,其中
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ddcc0295e334717dff21aaa3bf0dbf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eb6bf23a5a12e1ba5413594d7b1a57c.png)
A.![]() | B.![]() ![]() ![]() |
C.若![]() ![]() ![]() | D.若![]() ![]() |
您最近一年使用:0次
5 . 已知椭圆
的左、右焦点分别为
,过点
作直线
(与
轴不重合)交
于
两点,且当
为
的上顶点时,
的周长为8,面积为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb5577e464a02b38365a7d963642ad6.png)
(1)求
的方程;
(2)若
是
的右顶点,设直线
的斜率分别为
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/322a98c752d29b5721f17cb269564b51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/656690e5d6fe1b44a4983086229f34ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb5577e464a02b38365a7d963642ad6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9913c4712821819af99d54b3dcfd19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667cb59b1d1cb18b48d881b154013650.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e0f3d01ffbe8e92705998320ddf2f44.png)
您最近一年使用:0次
2023-01-16更新
|
1933次组卷
|
7卷引用:江苏省南通市区、启东市、通州区2022-2023学年高三上学期期末联考数学试题
名校
6 . 如图,在四棱锥
中,底面
是菱形,
平面
,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/19/05c77d18-043a-48c5-a50e-299160013648.png?resizew=184)
(1)证明:
;
(2)若
为
上的点,当
与平面
所成角的正弦值最大时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/19/05c77d18-043a-48c5-a50e-299160013648.png?resizew=184)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0691064b69881b0fd4e8d15a41919bba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3653ada76ba0c8afe9d57c8e7832c6ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0519ba613bf121a2c1bc28c948266d74.png)
您最近一年使用:0次
2023-01-16更新
|
1345次组卷
|
3卷引用:江苏省南通市区、启东市、通州区2022-2023学年高三上学期期末联考数学试题
名校
解题方法
7 . 已知双曲线
的右焦点为
,过点
作一条渐近线的垂线,垂足为
,若
的重心
在双曲线上,则双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ec7fa23be9cbe9a50607ea6bc8a4ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06d953266f08eb217f1b174c1729e0ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-01-16更新
|
1085次组卷
|
3卷引用:江苏省南通市区、启东市、通州区2022-2023学年高三上学期期末联考数学试题
8 . 若抛物线
上的一点
到坐标原点
的距离为
,则点
到该抛物线焦点的距离为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e1d93f21f39ebf95b5929b456814246.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbff61fe9d4e93d7cc338489d1c99c40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2023-01-16更新
|
915次组卷
|
3卷引用:江苏省南通市区、启东市、通州区2022-2023学年高三上学期期末联考数学试题
名校
9 . 设;
,若p是q的充分不必要条件,则( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-01-15更新
|
835次组卷
|
6卷引用:江苏省苏北四市(徐州、淮安、宿迁、连云港)2022-2023学年高三上学期1月第一次联合调研测试数学试题
江苏省苏北四市(徐州、淮安、宿迁、连云港)2022-2023学年高三上学期1月第一次联合调研测试数学试题江苏省苏北四市(徐州、淮安、宿迁、连云港)2023届高三上学期第一次调研数学试题福建省福州第三中学2023届高三第十二次质量检测数学试题(已下线)FHsx1225yl06(已下线)第06讲 第一章集合与常用逻辑用语章末题型大总结(2) -【帮课堂】福建省福州市鼓山中学2023-2024学年高一上学期10月月考数学试题
名校
解题方法
10 . 已知抛物线
与过点
的直线相交于A,B两点,且OB⊥AB(O为坐标原点),则三角形OAB的面积为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c58e4369639e4d3fcdd50e0e5983bf0e.png)
您最近一年使用:0次
2023-01-15更新
|
644次组卷
|
4卷引用:江苏省苏北四市(徐州、淮安、宿迁、连云港)2022-2023学年高三上学期1月第一次联合调研测试数学试题