解题方法
1 . 已知
分别是空间四边形
的边
的中点.
四点共面;
(2)用向量法证明:
平面
;
(3)设
是
和
的交点,求证:对空间任一点
,有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42c2d86d8daea5e652d99fe1c6bc3f9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a337a934b801730321f67b0e5a0b144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42c2d86d8daea5e652d99fe1c6bc3f9a.png)
(2)用向量法证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/debdc6632a4877e5131d3da25cda8b89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e55e398e8520d8a36fb5a625a085b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f205863771fab4f202ae24c5a6f7a747.png)
您最近一年使用:0次
2023-09-18更新
|
316次组卷
|
22卷引用:高二上学期第一次月考解答题压轴题50题专练-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)
(已下线)高二上学期第一次月考解答题压轴题50题专练-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)人教A版(2019) 选择性必修第一册 必杀技 第一章 空间向量与立体几何 第1.1~1.3节综合训练人教B版(2019) 选择性必修第一册 必杀技 第一章 空间向量与立体几何 第1.1节 综合训练第一章+空间向量与立体几何(基础过关)-2020-2021学年高二数学单元测试定心卷(人教B版2019选择性必修第一册)(已下线)专题04 用空间向量研究直线、平面的位置关系 核心素养练习-【新教材精创】2020-2021学年高二数学新教材知识讲学(人教A版选择性必修第一册)人教A版(2019) 选择性必修第一册 新高考名师导学 第一章 复习参考题 1(已下线)1.2 空间向量基本定理-2021-2022学年高二数学尖子生同步培优题典(人教A版2019选择性必修第一册)北师大版(2019) 选修第一册 必杀技 第三章 §2,§3 综合训练(已下线)专题8.6 空间向量及其运算和空间位置关系(讲)- 2022年高考数学一轮复习讲练测(新教材新高考)(已下线)1.2 (整合练)空间向量基本定理-2021-2022学年高二数学考点同步解读与训练(人教A版2019选择性必修第一册)(已下线)第02讲 空间向量基本定理(教师版)-【帮课堂】(已下线)专题二 空间向量及其运算-2021-2022学年高二数学同步单元AB卷(人教A版2019选择性必修第一册)(已下线)复习参考题 1沪教版(2020) 选修第一册 领航者 第3章 3.2 第1课时 向量共面的充要条件空间向量基本定理1.2 空间向量基本定理练习(已下线)第02讲 空间向量基本定理(5大考点8种解题方法)-2022-2023学年高二数学考试满分全攻略(人教A版2019选择性必修第一册)(已下线)高二上学期期中【易错60题考点专练】(选修一全部内容)-2022-2023学年高二数学考试满分全攻略(人教A版2019选修第一册)人教A版(2019)选择性必修第一册课本习题第一章复习参考题(已下线)模块四 专题4 大题分类练 《空间向量与立体几何》基础夯实练陕西省西安市鄠邑区2023-2024学年高二上学期期中数学试题(已下线)专题02空间向量基本定理(2个知识点3种题型)-【倍速学习法】2023-2024学年高二数学核心知识点与常见题型通关讲解练(人教A版2019选修第一册)
2 . 如图,在平面直角坐标系
中,已知椭圆
的左、右顶点分别为
,过左焦点
的直线与椭圆交于点
(点
在点
的上方).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/aeb78e00-02a2-411b-adbd-7fb2417fdbcf.png?resizew=276)
(1)求证:直线
的斜率乘积为定值;
(2)过点
分别作椭圆的切线,设两切线交于点
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/aeb78e00-02a2-411b-adbd-7fb2417fdbcf.png?resizew=276)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5671fb25040a712a49e8c8148d67d300.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae75ef3ed2a12bc27d49bfd728260fbe.png)
您最近一年使用:0次
3 . 如图,在四棱锥
中,底面
是边长为
的菱形,
,
为正三角形,
为
的中点,且平面
平面
,
是线段
上的点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/18/4b308c9e-cc67-401c-9878-a0681e0cbc09.png?resizew=239)
(1)当点
为线段
的中点时,证明直线
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求证:
;
(3)点
在线段
上,且
,求直线
与平面
的夹角的正弦值
![](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/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a58a622e2b1a239f2f96aa1501e9799.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/18/4b308c9e-cc67-401c-9878-a0681e0cbc09.png?resizew=239)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280247d7df395bb9ea78c51e67b458d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a89efb10e95245a41f6c7a80189528.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03554a133b17b47a564671a60802d3df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
2022-08-13更新
|
873次组卷
|
3卷引用:高二上学期第一次月考试题(范围:第一章 空间向量与立体几何、第二章 直线和圆的方程)-【同步题型讲义】2022-2023学年高二数学同步教学题型讲义(人教A版2019选择性必修第一册)
(已下线)高二上学期第一次月考试题(范围:第一章 空间向量与立体几何、第二章 直线和圆的方程)-【同步题型讲义】2022-2023学年高二数学同步教学题型讲义(人教A版2019选择性必修第一册)北京市第五十七中学2021-2022学年高二下学期期末考试数学试题(已下线)第一章 空间向量与立体几何(A卷·知识通关练)(2)
解题方法
4 . 对于正实数a,b(
),我们熟知基本不等式:
,其中
为a,b的几何平均数,
为a,b的算术平均数.现定义a,b的对数平均数:
.
(1)设
,求证:
,并证明
;
(2)若不等式
对任意正实数a,b(
)恒成立,求正实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e7d3f3ed46c5e527ebb06e59824a047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b449e5cc6ce142bee1f11429a7daa39c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b2f290e361476c500ab8968780016b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c484d6859725462418f3aaa8b5bdb0c.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7e5b12719915c134ab756cb09f75c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f546a0d0f73374e8853f92f8439a27b6.png)
(2)若不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/442b06ad381782a1c48ca38611429894.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432d77fe5ad3032d59a237dd94c8a638.png)
您最近一年使用:0次
解题方法
5 . 已知双曲线
上有三点
,且
的中点分别为
,设直线
的斜率都存在,分别记为
,且
,直线
的斜率都存在,分别记为
,
(1)求证
;
(2)类比(1)中结论,写出椭圆
中类似的结论,并证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040b6c904477030ecf8ba20b2b18759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0e08a39c6619123557148d195abfbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927456b0989846a2f1573844bbaa2105.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12e8ebdbd58b757fc18d53f7a57348ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca1726d463bd741c904abd9b6589056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f59eb7008cb65c5dede5363f7c40534.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a0e08a39c6619123557148d195abfbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ae35aad83022311eebadcdfee6d45f3.png)
(1)求证
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3792426d62415dd198a0b083f42ae59.png)
(2)类比(1)中结论,写出椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
您最近一年使用:0次
6 . 已知函数
,且函数在点
处的切线为
轴.
(1)当
时,证明:
;
(2)已知
,
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a4edb87617f8dd25e703b7dafdd875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/206c6223f53f2291075f407c16fb5d84.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4613271f782a90ab580131d09d03d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0704f453b2de48d36911f7db496bbf82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65ad0e3d5a6e08186d3d2745a3f36d8.png)
您最近一年使用:0次
7 . 已知复数
满足
.
(1)求证:
;
(2)若
的虚部为正数,求
,
,
,
,根据
的规律,求出
的值(不需要证明).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8646eaa05bfde39d27813c301a076420.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5c6b89b69721e00cdfb30bef61a4916.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b0a89e3c30f6e4d4c5db4378b05d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d800f03de80068a1172beac3a2c75587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3336c8ed5361c10c37300e41e03f9f2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ccdb989a252ffac6e46c5a80979043c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ace3db19b2dd8d613cfbbb1abdfddc3.png)
您最近一年使用:0次
解题方法
8 . 已知函数
,
.
(1)求函数
的极大值;
(2)求证:
;
(3)对于函数
与
定义域上的任意实数
,若存在常数
,
,使得
和
都成立,则称直线
为函数
与
的“分界线”.设函数
,试探究函数
与
是否存在“分界线”?若存在,请加以证明,并求出
,
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd47380305102e11cc930e008d25c75b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d5bccea7ccd7a3c854c6fb4cb5ca75.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43876a5fdbcac476e7eed5a24434a484.png)
(3)对于函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a48d51c7e8a1f5cf3349e07a8ac4f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745408b6bd3b6feab62095c84b81a33d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15fb18163df0690365a0d2e7ee88f5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e88bd707d897ad723c5bf4809f278cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eb7df298a9364b36e079a61caec815c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
您最近一年使用:0次
9 . 请用综合法或分析法、反证法证明:
(1)如果
,
,则
;
(2)若
,
,
为正数且
,求证:
.
(1)如果
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b82e3bb76bbe517020880acebfd53bfc.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56667aabbe787eb1c3189d487d203e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0934988c764262ed705f1542b7adfc0a.png)
您最近一年使用:0次
10 . 已知函数
.
(1)证明:
;
(2)设
,
在
上的极值点从小到大排列为
,求证:
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b516b223c11709487a6bd89658d70f9b.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6acb0f1ac694dd177e99fc385f23318.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e15c2171c1be9ec394494ad822a048d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46be55c8f2760d6db125f46691a3de48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0006aba7435a296cd3a9572f9fa16146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff2aa68223dfc02f39d7d10fa005387.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f225a783d5a2c6aa4278a2f7e398083.png)
您最近一年使用:0次