名校
1 .
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ef3afba7d36befbeabe1e52c4a99a1d.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-03-28更新
|
1002次组卷
|
6卷引用:陕西省西安市第八十三中学2022-2023学年高一下学期期中数学试题
名校
解题方法
2 . 如图,在直角梯形
中,
,
与
交于点
,
,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/29/f737ce8b-6683-4b95-a648-dbc183dfda38.png?resizew=134)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a3ac3a23bf91b117707ec6d6263936c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/29/f737ce8b-6683-4b95-a648-dbc183dfda38.png?resizew=134)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-03-28更新
|
801次组卷
|
5卷引用:陕西省西安市第八十三中学2022-2023学年高一下学期期中数学试题
解题方法
3 . 如图,在
中,
,
.过点
的直线与边
,
分别交于点
,
.设
,
,其中
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/2573aab5-c49d-4923-8883-07fdb67edb69.png?resizew=158)
(1)试用
与
表示
,
;
(2)证明
为定值,并求此定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecd44a18989da3cb1ed7eebc42936a2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b962b48f770c6cb6d941a514a953a0e6.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/60ef95894ceebaf236170e8832dcf7e3.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/6886575386a425304490b689a69ad08d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4785d530219f1804e70a929bf04f0645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c98c0ec4c99989333faa478a946985.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/2573aab5-c49d-4923-8883-07fdb67edb69.png?resizew=158)
(1)试用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/538c1a9e933bc1e29d785eeda9cd1abc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89265cbe3abc6b966ce8967fead448b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abcb5d89b04570ceda2c29e11cb27a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
(2)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcaac97efa5492fc72fb0f773f0c4861.png)
您最近一年使用:0次
2023-03-26更新
|
509次组卷
|
2卷引用:陕西省西安市2022-2023学年高一下学期3月阶段检测数学试题
解题方法
4 . 在
中,已知
是
边上一点,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7bf9332e1e502ce0dcfd28def496c88.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
5 . 在
中,设
,
,
为
的重心,则用向量
和
为基底表示向量
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e55362a3a1f592e6551851c42d3078.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9206f052cc7298fdf9049f9386f53928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f03e5ac2b3163887aa2c70cdea27636.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-03-26更新
|
676次组卷
|
3卷引用:陕西省西安地区八校2023届高三下学期第二次联考文科数学试题
解题方法
6 . 如图,在平行四边形
中,E、F依次是对角线
上的两个三等分点,设
,试用
与
表示
和
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dfdbbc32d83b85bf7725dbb320ca09e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdf814115dc9fea36cc1b6cd2b293390.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f33a112e9728d7b560199765c815f69.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/20/1ad270c6-4cc2-4c58-88b5-b45fbaab3600.png?resizew=210)
您最近一年使用:0次
解题方法
7 . 在正四棱锥
中,
为
的中点,过
作截面将该四棱锥分成上、下两部分,记上、下两部分的体积分别为
,则
的最大值是___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46bd37096f7014e00fd079823b6c3c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae00abada46919dffcfb342971dcdabd.png)
您最近一年使用:0次
2023-03-11更新
|
1983次组卷
|
11卷引用:陕西省咸阳市高新一中2023届高三下学期第八次质量检测理科数学试题
陕西省咸阳市高新一中2023届高三下学期第八次质量检测理科数学试题湖南省部分市2023届高三下学期3月大联考数学试题河南省焦作市2022-2023学年高三第二次模拟考试数学(理科)试题吉林省白山市2023届高三三模联考数学试题(已下线)第91练 计算速度训练11(已下线)重难点专题01 空间几何体测试-【同步题型讲义】河北省保定市安国中学等3校2023届高三下学期3月月考数学试题辽宁省锦州市黑山县黑山中学2023届高三一模数学试题(已下线)重难点突破03 立体几何中的截面问题(八大题型)(已下线)空间几何体(已下线)重难点专题09 立体几何中的截面问题-【帮课堂】(苏教版2019必修第二册)
名校
解题方法
8 . 已知双曲线
的左、右焦点分别为
,
,A是双曲线C的左顶点,以
为直径的圆与双曲线C的一条渐近线交于P,Q两点,且
,则双曲线C的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.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/643ef7d761de0e794fc39937dc72ac6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9943c86d2ba66ec94576e580b450639e.png)
A.![]() | B.![]() | C.![]() | D.2 |
您最近一年使用:0次
2023-03-10更新
|
920次组卷
|
3卷引用:陕西省西安市周至县2024届高三一模数学(文)试题
名校
解题方法
9 . 在平行四边形ABCD中,F是边BC的中点,点E满足
.若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5c7f6c9696128eda680a3bfe199f40c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c6c052cd7a79455c3df58e1273ec574.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfd989ddfbed4a6aa18ea57734522153.png)
A.![]() | B.1 | C.![]() | D.3 |
您最近一年使用:0次
2023-02-26更新
|
1476次组卷
|
5卷引用:陕西省榆林市绥德中学2023届高三下学期2月月考文科数学试题
名校
解题方法
10 . 平面内给定三个向量
,且
.
(2)如图,在
中,G为中线OM上一点,且
,过点G的直线与边OA,OB分别交于点P,Q(
不与
重合).设向量
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e28f8603318df5ef1758a78571fc8313.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2715e663f6f93a8ead9d278863aa7eb4.png)
(2)如图,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b06977fbae12e6aed5e602cfc28b0fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43fb2bac694eaf7032a3a1022de60a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f32043a653eba02c79ae6395b3bcb34f.png)
您最近一年使用:0次
2023-02-23更新
|
2058次组卷
|
6卷引用:陕西省咸阳市永寿县中学2022-2023学年高一下学期第一次月考数学试题
陕西省咸阳市永寿县中学2022-2023学年高一下学期第一次月考数学试题辽宁省葫芦岛市2022-2023学年高一上学期期末数学试题江苏省南通市海安高级中学2022-2023学年高一下学期阶段检测(一)数学试题辽宁省沈阳市回民中学2022-2023学年度高一下学期4月月考数学试卷江苏省无锡市江阴市两校联考2023-2024学年高一下学期阶段检测(一)(3月)数学试卷(已下线)高一下学期期末复习解答题压轴题二十四大题型专练(1)-举一反三系列(人教A版2019必修第二册)