名校
1 . 已知函数
.
(1)判断函数
的奇偶性,并证明你的结论;
(2)求证:
是R上的增函数;
(3)若
,求m的取值范围.
参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c04caf886b24ac9fee263e203e89fc6.png)
(1)判断函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/872c8367ec27f1fe553d87e5397d236b.png)
参考公式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f35c30f027c8d39805c829139fa915d.png)
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2023-01-04更新
|
234次组卷
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2卷引用:广西钟山县钟山中学2021-2022学年高一上学期第二次月考数学试题
名校
2 . 如图,四棱锥PABCD中,侧面PAD是正三角形,底面ABCD是菱形,且∠ABC=60°,M为PC的中点.
(1)求证:PC⊥AD.
(2)在棱PB上是否存在一点Q,使得A,Q,M,D四点共面?若存在,指出点Q的位置并证明;若不存在,请说明理由.
(1)求证:PC⊥AD.
(2)在棱PB上是否存在一点Q,使得A,Q,M,D四点共面?若存在,指出点Q的位置并证明;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/6/c4e2b232-4b65-4ebc-95be-b89cb099e24d.png?resizew=170)
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2019-10-12更新
|
173次组卷
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2卷引用:广西贺州市钟山县钟山中学2020-2021学年高二上学期第二次月考数学试题
3 . 某几何体是上、下底面均为扇环形的柱体(扇环是指圆环被扇形截得的部分),其中
均与底面垂直,底面扇环对应的两个圆的半径分别为1和2,对应的圆心角为
,E为弧
的中点.
(1)证明:
平面
.
(2)直线
与
所成角的余弦值为
.
(i)求直线
与平面
所成角的正弦值;
(ii)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/360a93b9662f0ab8a69b131497520b53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84288b493b64c3a30466fb9075621da4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307807ee10071bafbe922eb18d2517d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4755dc59cb5a03cd39879bc80fdbb9.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f558992e649b93ee36f37513781311a8.png)
(i)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e4755dc59cb5a03cd39879bc80fdbb9.png)
(ii)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3a34ca15cac631d71e071408d54550c.png)
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4 . 已知O为坐标原点,点P到定点
的距离和它到定直线
的距离之比为
,点P的轨迹为曲线
.
(1)求
的轨迹方程;
(2)过点
作斜率分别为
的直线
,其中
交
于点C,D两点,
交
于点E,F两点,且M,N分别为
的中点,直线
与直线l交于点Q,若
的斜率为
,证明
为定值,并求出该定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb7a4158251fb98f60c7d77f8e7fbffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495bb3e5a3a9d35f5c9f0cf1f5d51876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d65e051e943ab28fa57aee2fb57994.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4fd4da08956db1f206c8ea026f4e52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e763b3e6a9af343e1b5b815941a1ae4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de32260ba2cb998f3ffb8449cdaf7708.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbf434334b09cc0fdd4e86e84e6ceb00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/044773b043d7622b3cea840560d6f6c9.png)
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5 . 如图,四边形
是正方形,
是边长为2的等边三角形,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/d5663b66-93cd-4a36-8753-c06cbfa860ef.png?resizew=211)
(1)证明:平面
平面
;
(2)若
.求棱锥
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d28c625d7ac6878957facc8274d459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/d5663b66-93cd-4a36-8753-c06cbfa860ef.png?resizew=211)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d28c625d7ac6878957facc8274d459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4901a7eda97d6a307db76c4fb196ba3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca839944d0ac5155e2d78c094899b789.png)
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解题方法
6 . 如图,在三棱
中,
平面
,
,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/53f89112-2bca-4e8a-929f-1a20939892b8.png?resizew=183)
(1)证明:平面
平面
;
(2)设棱
,
的中点分别为
,
,求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ca5bc93e35e739f6bccb8ca2003abb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d900531973c546625694146fa1509ab9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/53f89112-2bca-4e8a-929f-1a20939892b8.png?resizew=183)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a3fd5284e160896f07ce367645fd04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)设棱
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b37793a3a810e823e10c340986f55ddd.png)
您最近一年使用:0次
2022-08-14更新
|
396次组卷
|
6卷引用:广西壮族自治区贺州市昭平中学2021-2022学年高二下学期第一次月考数学(理)试题
名校
解题方法
7 . 如图,在四棱锥
中,底面
是矩形,
平面
,
,
,且
.
![](https://img.xkw.com/dksih/QBM/2022/6/2/2992598997565440/2995465896140800/STEM/2f5de7e4-1879-480e-8a41-6778a8918e39.png?resizew=236)
(1)求证:平面
平面
;
(2)若
,
,求直线PB与平面ADP所成角的正弦值.
![](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/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4d41989d897ddb0fe7aa59f3beaabf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e2267c84394668eff2e9f5918de4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50ee682e84c4868ecc516f8b48ad6844.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76421910ec10ba326618eded5229a740.png)
![](https://img.xkw.com/dksih/QBM/2022/6/2/2992598997565440/2995465896140800/STEM/2f5de7e4-1879-480e-8a41-6778a8918e39.png?resizew=236)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d28c625d7ac6878957facc8274d459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c24a968c73e960698a572ab01e3698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
您最近一年使用:0次
2022-06-06更新
|
1065次组卷
|
9卷引用:广西贺州市昭平县昭平中学2021-2022学年高二下学期第二次月考数学(理)试题
广西贺州市昭平县昭平中学2021-2022学年高二下学期第二次月考数学(理)试题海南省2022届高三上学期学业水平诊断一数学试题(已下线)解密10 空间向量与立体几何(分层训练)-【高频考点解密】2022年高考数学二轮复习讲义+分层训练(浙江专用)(已下线)2022年全国高考乙卷数学(理)试题变式题9-12题(已下线)7.3 空间角(精讲)(已下线)2022年全国高考乙卷数学(理)试题变式题17-20题海南省2023届高三高考全真模拟(一)数学试题福建省福州第三中学2023届高三上学期第三次质量检测数学试题辽宁省六校2022-2023学年高三上学期期中数学试题
8 . 记数列
的前n项和为
,已知
,
.设
.
(1)证明:数列
为等比数列;
(2)设
,
为数列
的前n项和,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d471926f7b27322d90c82b9ce21d3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b065334d8f60c49f4bd3d9f1373fe4cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2f3dd930d591a7debf35234d2763c67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac8e1d60f036093acd1e8fb476226b0.png)
(1)证明:数列
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fce83115a50f99e08e9a2db7267aeed.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d6da49fe0da1e0850b75cc2e490ad88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38ef4c4439b36c2847b0056a116d56d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ae9a3b0b7aeb1545b65d91aa371b3c.png)
您最近一年使用:0次
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解题方法
9 . 如图,四棱锥
的底面
为矩形,
底面
,
,点
是棱
的中点.
![](https://img.xkw.com/dksih/QBM/2022/4/16/2959554343337984/2962809462726656/STEM/a6cc28c94f5f4f9083c776a3a016ed64.png?resizew=154)
(1)求证:
;
(2)若
,
,求三棱锥
的体积.
(参考公式:锥体体积公式
,其中
为低面面积,
为高.)
![](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/829f9180ddd9aa1a0ee0dc520f4e0b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://img.xkw.com/dksih/QBM/2022/4/16/2959554343337984/2962809462726656/STEM/a6cc28c94f5f4f9083c776a3a016ed64.png?resizew=154)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf900817bd582fe8c5770158458208a1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f656e1d1f68954e5f06de8958f6a9310.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d492a2248463e0c0199a25d0f76d23.png)
(参考公式:锥体体积公式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f7309683ff41a94e5c5cfeabaeda52a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
您最近一年使用:0次
2022-04-21更新
|
1143次组卷
|
3卷引用:广西贺州第五高级中学2021-2022学年高二下学期第一次月考数学(理)试题
名校
解题方法
10 . 如图,在三棱锥
中,点E,F分别是BD,BC的中点,
,求证:
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b21f9bbccc32b3e96a6598cb852f4c7e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4611ceb2a28f7a7e4d24266d7f99b22.png)
您最近一年使用:0次
2022-05-23更新
|
740次组卷
|
9卷引用:广西贺州市平桂区平桂高级中学2020-2021学年高一下学期第一次月考数学试题
广西贺州市平桂区平桂高级中学2020-2021学年高一下学期第一次月考数学试题江苏省泰州市2018-2019学年高一第二学期期末考试数学试题四川省眉山市仁寿县第二中学2019-2020学年高二上学期12月月考数学(文)试题四川省眉山市仁寿县第二中学2019-2020学年高二上学期12月月考数学(理)试题江西省南昌市新建县第一中学2019-2020学年高二开学考试数学(文)试题(已下线)【新东方】高中数学20210429—004【2020】【高二上】新疆师范大学附属中学2019-2020学年高一下学期期末考试数学试题贵州省黔西南州金成实验学校2022-2023学年高一下学期期末质量检测数学试题专题05 空间直线、平面的垂直-《期末真题分类汇编》(新高考专用)