名校
1 . 已知数列
满足
,则
的值为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89d45b545af56c6594c18d10fc3cf073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f866388a5309a5b87bd2d033647ba6.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-03-12更新
|
412次组卷
|
2卷引用:山东省聊城市2023-2024学年高二上学期1月期末教学质量抽测数学试题
名校
2 . 已知函数
,则
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f148829212bb81f88664bb893b691fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4768b34d8cc16cd33d703886b345bf3.png)
A.![]() | B.0 | C.1 | D.2 |
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2024-03-06更新
|
1307次组卷
|
2卷引用:山东省聊城市2023-2024学年高二上学期1月期末教学质量抽测数学试题
3 . 在三棱锥
中,
,
,
分别为
,
,
的中点,若
,则
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9abaeba15f3abdd877bc701af52c5cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32903b203e3942b9d7536345e5c07004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13f0ba5a06163b9ec2e088745a3ea31.png)
A.![]() | B.1 | C.2 | D.3 |
您最近一年使用:0次
名校
解题方法
4 . 如图,在长方体
中,
,
,M为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/672dedfc-fbf0-42fd-9d72-7cbf5e583964.png?resizew=138)
(1)证明:
;
(2)若
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ea52361458ce2e49ed0fe99d8e6c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/672dedfc-fbf0-42fd-9d72-7cbf5e583964.png?resizew=138)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9565316cfa197f2a25256b0b8e9b408.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2eb89294b31ffdd2680b4361e8994d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e363082228a653eb5b0dbc3c6161a9c9.png)
您最近一年使用:0次
2024-02-24更新
|
216次组卷
|
2卷引用:山东省聊城市2023-2024学年高二上学期1月期末教学质量抽测数学试题
解题方法
5 . 图1是由
,直角梯形ACDE和等腰梯形BCGF组成的一个平面图形,其中
,
,
,将直角梯形ACDE和等腰梯形BCGF分别沿AC,CB折起使得CD,CG重合,连接EF,如图2.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/9b873451-a3e9-4c91-a7d9-4e52a274d6c9.png?resizew=290)
(1)求图2中的点B到平面ACDE的距离;
(2)证明图2中的A,B,F,E四点共面,并求平面ABFE与平面ACDE夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05f8145e5b12aa0b0b13ce4d64c619ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209acf15985d1ea1ad86fc4a37e38c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49ed49cbf8a7eaabec727f58c0488d18.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/9b873451-a3e9-4c91-a7d9-4e52a274d6c9.png?resizew=290)
(1)求图2中的点B到平面ACDE的距离;
(2)证明图2中的A,B,F,E四点共面,并求平面ABFE与平面ACDE夹角的余弦值.
您最近一年使用:0次
6 . 已知双曲线
的右焦点为
,右顶点为A,离心率为e,直线
轴,且与C的左、右两支分别交于P,Q两点,О为坐标原点,则下列命题正确的是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a2cfa22139b3e9c9a73500e1ba19f52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be92f0e0012a7696c78e3e00513edefd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177e105d92d91009c555bd2672fb1119.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若存在l使![]() ![]() |
D.若存在l使![]() ![]() |
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7 . 已知椭圆
的左、右焦点分别为
,F,其中
在抛物线
的准线l上,过F的动直线m交
于A,B两点,交
于M,N两点,且当
轴时,
.
(1)求
的方程;
(2)若
于点H,判断坐标原点О是否在直线MH上,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e48d1edbfb6a5a48f9a95551d1dbc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e55590555905eb4f57889bbd16e39a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e55590555905eb4f57889bbd16e39a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09c7fc8e284e4aafd93a630d50a53930.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2dcd849446295cbd268b3a8489268f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff1c07d3ab5f594be5fffe13ebaaccb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0881990aaabc3e4aeacbcb525bbfde8a.png)
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8 . 已知直线
与圆
交于A,B两点,且圆C在A,B两点处的切线交于点M,若
为正三角形,则
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2a9fc4c3f61d7c459db99c1c459de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/997d1841853a6dcdb971b13413b0ac88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a5e0a51c9e14fb246b0ba0b231c1e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
解题方法
9 . 抛物线有如下光学性质:从焦点发出的光线,经过抛物线上的一点反射后,反射光线平行于抛物线的对称轴;反之,平行于抛物线对称轴的入射光线经抛物线上一点反射后,反射光线必过抛物线的焦点.已知抛物线
,一束平行于x轴的光线
,从点
射入,经过C上一点A反射后﹐再经C上另一点B反射后,沿直线
出,则线段AB的长为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa2c731aaa4005382d5b4324e29fbb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d69492f65facf266aaf9c9ec5af46c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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解题方法
10 . 已知等比数列
中,
,
,
,
成等差数列.
(1)求
的通项公式;
(2)令
,求数列
的前n项和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a8553a873958eb9d14c89c59ab5c317.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86e2e42b4aa93db9241103e7f61766c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daf464629fa321a6ff7401ab79f07083.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
(2)令
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d1bdd41649884dbf073821e9b7f3a04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034ba25825c13725931c483aa47c9363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
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