解题方法
1 . 如图,在四棱锥
中,
底面
,底面
是矩形,
.
平面
;
(2)求平面
与平面
的夹角的余弦值.
![](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/6546d9c27cc1d9d5c5cbd2fc294f6b3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
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2024-03-03更新
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1444次组卷
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3卷引用:贵州省安顺市2024届高三下学期模拟考试(一)数学试卷
解题方法
2 . 已知平面直角坐标系内的动点
恒满足:点
到定点
的距离与它到定直线
的距离相等.
(1)求动点P的轨迹C的方程;
(2)过点
的直线l与(1)中的曲线C交于A,B两点,O为坐标原点,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63309dbc3612815f6dbdee23d9a10adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed919c5b87f48f117bcddee8783f6f06.png)
(1)求动点P的轨迹C的方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bef9655d68f7cb3c579f0136da1516b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
您最近一年使用:0次
名校
3 . 设a,b,c均为正数,且
.
(1)求
的最小值;
(2)证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751e274e9107d780c39ba9c49d6daefb.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377b30e834f617e546d3d72ab488344f.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1515f3041aa48f555edf56ceb5aeae.png)
您最近一年使用:0次
2022-05-11更新
|
2276次组卷
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14卷引用:贵州安顺市2023届上学期高三期末数学(理)试题
贵州安顺市2023届上学期高三期末数学(理)试题云南省昆明市2022届高三“三诊一模“高考模拟数学(文)试题云南省昆明市2022届高三“三诊一模“高考模拟数学(理)试题(已下线)2022年全国高考甲卷数学(理)试题变式题13-16(已下线)2022年全国高考甲卷数学(理)试题变式题13-16题(已下线)专题04 基本不等式及其应用陕西省西安市莲湖区2021-2022学年高二下学期期末理科数学试题(已下线)专题19 不等式选讲(已下线)2022年全国高考甲卷数学(理)试题变式题21-23题(已下线)专题12-2 不等式选讲归类-1(已下线)专题04 基本不等式及其应用-3四川省成都市树德中学2023届高三三诊模拟数学(理)试题贵州省毕节市2023届高三上学期第一次教学质量监测理科数学试题(已下线)专题14 不等式选讲
名校
解题方法
4 . 已知函数
过点
.
(1)求
的解析式;
(2)求
的值;
(3)判断
在区间
上的单调性,并用定义证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/756ff9d863228496c10cc618df076fe1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b530377e3fe56b7988935dd73d9dccd.png)
(3)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02e1c9c97de9198d47306216e9961b80.png)
您最近一年使用:0次
2022-01-14更新
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647次组卷
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5卷引用:贵州省安顺行知高级中学2024届高三上学期第一次月考数学试题
贵州省安顺行知高级中学2024届高三上学期第一次月考数学试题广东省广州市番禺区2020-2021学年高一上学期期末数学试题(已下线)第5章 函数概念与性质-2021-2022学年高一数学单元过关卷(苏教版2019必修第一册)广东实验中学越秀学校2022-2023学年高一上学期期中数学试题广东省广州南方学院番禺附属中学2023-2024学年高一上学期12月月考数学试题
名校
5 . 已知数列
,
,
,...,
,...,记数列的前
项和
.
(1)计算
,
,
,
;
(2)猜想
的表达式,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa210aa7061d1260ec53d69677e6e6bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b36c6ae456b05b0999a4bae5dfd363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c75b7566148cf657b31fe1b77a4cfb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c94ac7a76849a3d8ccb33dae6c6c8fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
(1)计算
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6899bf9cadae2ccdb14cbc87d4f280ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f30f56664446f32dbbc2c5f12a99374.png)
(2)猜想
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
您最近一年使用:0次
2020-08-07更新
|
1117次组卷
|
7卷引用:贵州省安顺市平坝第一高级中学2018-2019学年高二下学期期末考试数学(理)试题
解题方法
6 . 如图所示的多面体中,
平面
,
,
,且
,点
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/830a9f28-d4a1-4c34-bfeb-9eb6368b8e44.png?resizew=133)
(1)求证:平面
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed04b01505bbd8a4ac0bc12e46f23bf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28f4303c0ea0861923f9284498a4a173.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/845d5c3f2067a8173a569003714282ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/830a9f28-d4a1-4c34-bfeb-9eb6368b8e44.png?resizew=133)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/557e120c066e17ba3eee00410cbed573.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a44b34f6deecbc80481218e1e901f788.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ae60a871260f755ecbcdc5970d4bb05.png)
您最近一年使用:0次
名校
7 . 已知函数
(
且
)在
上的最大值与最小值之和为
,记![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602f0dcb6d14064cf4903f3fceed10ff.png)
(1)求
的值;
(2)证明
;
(3)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c0f8ff2c79432e480999af53703bb26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c400a615a16a1662de98dfb4e49d58d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9210e75c35fb455d0446eb7ddba7d79c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b7f27ebcef70a3ebbbe8d2e53ea0896.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602f0dcb6d14064cf4903f3fceed10ff.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2493344c3e6aa5e038c98ee6d60bb62d.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27c66a33c3fcb89e046c7de424d82101.png)
您最近一年使用:0次
2020-10-24更新
|
748次组卷
|
5卷引用:贵州省安顺市第三高级中学2022届高三第一次阶段测试数学(文)试题