1 . 人们发现,可以通过公式
来求方程
(
均为正实数)的正实数根.例如,方程
的正实数根为
,我们知道
是
的唯一正实数根,所以
,这里规定
.根据以上材料可得
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d63ca557a72dca6d8e6fd1292cc938.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90bd63762e6bc365c2fa3f9c2387e46c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cd5371a6f0f82c65dd22f75f8b807c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad71356dc416a3d67dd0287fe1d08c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b863de54fe9b9d5191d23ff8e23ac42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ad71356dc416a3d67dd0287fe1d08c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd779c16bcc1a432eee1bb797faea3c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d70c1b3cd248c4d0c6c900dae59bc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fddef4c3aade36a03ea32ba7ae8633a.png)
A.3 | B.6 | C.9 | D.4 |
您最近一年使用:0次
2 . 如图所示,梯形
是平面图形ABCD用斜二测画法得到的直观图,
,
,则平面图形ABCD中对角线AC的长度为________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d609847e2ff3d64e5a514582c3ead0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9598c8022d6da9d9a29615210053432.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c502451612db58b480ffa3bb12b44041.png)
您最近一年使用:0次
3 . “奔驰定理”因其几何表示酷似奔驰的标志得来,是平面向量中一个非常优美的结论.奔驰定理与三角形四心(重心、内心、外心、垂心)有着神秘的关联.它的具体内容是:已知M是
内一点,
,
,
的面积分别为
,
,
,且
.以下命题正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d011d6ad89d0b033f96c2efbb314d78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82e8ecb371ce77dca5554e8e03b41386.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4b0c4b339f44bbac0e275eb0718234.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2319b6a5373bc8eb13772b8e6d047779.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea3c7cd2f23b4521e64a7e64844ec48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/089e8a7f6c535fc3cd270af428d55f65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b63a8338380587c4466483cc9b2fd2bb.png)
A.若![]() ![]() |
B.若M为![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若M为![]() ![]() ![]() |
您最近一年使用:0次
4 . 在2022年2月4日举行的北京冬奥会开幕式上,贯穿全场的雪花元素为观众带来了一场视觉盛宴,象征各国、各地区代表团的“小雪花”汇聚成一朵代表全人类“一起走向未来”的“大雪花”的意境惊艳了全世界(如图①),顺次连接图中各顶点可近似得到正六边形
(如图②).已知正六边形的边长为2,点
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbb50160115943756233eaa0d2d0957b.png)
________ ;若点
是正六边形
边上的动点(包括端点),则
的最大值为________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f78b6f499c80cbc17370eacbcd0613c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbb50160115943756233eaa0d2d0957b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb9c2f698d65ceda04850d8fbf1240cc.png)
您最近一年使用:0次
5 . 南宋数学家秦九韶在《数书九章》中提出“三斜求积术”,即以小斜幂,并大斜幕,减中斜幂,余半之,自乘于上:以小斜幂乘大斜幂,减上,余四约之,为实:一为从隅,开平方得积可用公式
,其中a、b、c、S为三角形的三边和面积)表示.在
中,a、b、c分别为角A、B、C所对的边,若
,且
,则下列命题正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ad209824da2aadcf7b5479de68187cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5832da4ef8ee567f7a301c042e9c9306.png)
A.![]() ![]() | B.![]() |
C.![]() | D.![]() ![]() |
您最近一年使用:0次
名校
6 . 函数
的图象的对称中心坐标是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5802b9a8d84d2862c8b9a2c1561fd158.png)
您最近一年使用:0次
7 . 设函数
,其中
,已知
,且
.
(1)求
的解析式;
(2)求
的单调递增区间;
(3)将
的图象向左平移
个单位长度后,得到函数
的图象,若存在
,使得
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766fea62d09b42af8b11244a70485174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40be0cfe807b44c2b0097fdd3920cffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06f5aea3655b47e34a582dc600ff61d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5518ac9acc1de1b1005188d23c8bb6d.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(3)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028517e8bebe634441e0a5c79828e88a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8afa701e97a54dd557f634e9a57f78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7d84f2f62a7f41113c6d8e55dc99fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
8 . 已知角
的终边上有一点
,且
,则
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3d378fb83f119b2f9dc83700d9543d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f65688f71920743958d918ad3b68d411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d97540b583d2f04799d0a791cce3268b.png)
您最近一年使用:0次
9 . 如图、某港口O要将一件重要物品用小艇送到一艘正在航行的轮船上,在小艇出发时,轮船位于港口O北偏西
方向且与该港口相距
的A处,并以
的航行速度沿正东方向匀速行驶,假设该小艇沿直线方向以
的航行速度匀速行驶,经过
与轮船相遇.(假设水面平静)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/19/6b7939b6-56a3-4ae7-90d0-7b6d0d796451.png?resizew=168)
(1)要使相遇时小艇的航行距离最短,小艇的航行速度应为多少?
(2)假设小艇的速度最快只能达到
,要使小艇最快与轮船相遇,应向哪个方向航行?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7d1525355976915a23b0a3050e6a687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdde1bd791be76f4dfc0116f5c8dacce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6737e5a65b0067db9bdac02a52de7131.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ee630252dc9ec9c8453d1561a81743.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/19/6b7939b6-56a3-4ae7-90d0-7b6d0d796451.png?resizew=168)
(1)要使相遇时小艇的航行距离最短,小艇的航行速度应为多少?
(2)假设小艇的速度最快只能达到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d568215783a27afd4041395551623c4a.png)
您最近一年使用:0次
7日内更新
|
179次组卷
|
5卷引用:辽宁省朝阳市建平县第二高级中学2023-2024学年高一下学期6月月考数学试题
辽宁省朝阳市建平县第二高级中学2023-2024学年高一下学期6月月考数学试题陕西省渭南市富平县蓝光中学2023-2024学年高一下学期6月月考数学试题(已下线)云南省曲靖市部分学校2023-2024学年高一下学期6月联考数学试题(已下线)专题1 以实际问题为背景的解三角形问题【讲】(高一期末压轴专项)河南省周口市鹿邑县第二高级中学校2023-2024学年高一下学期月考测试(二)(4月)数学试题
名校
解题方法
10 . 定义两个向量组
,
的运算
,设
,
,
为单位向量,向量组
,
分别为
,
,
的一个排列,则
的最小值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/858abf937bceeabf58fa26f5e2ffa418.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbea56fd5adb7789d6aa1de90b65286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/277a03c880a98dd28733c3ce21487b9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0411792b587ddd3e04440392f011c224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95d660852c5226ff65a21cfb36b8b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17ccfda9afde4441cfd1d4df5fe9622d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/858abf937bceeabf58fa26f5e2ffa418.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbea56fd5adb7789d6aa1de90b65286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0411792b587ddd3e04440392f011c224.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b95d660852c5226ff65a21cfb36b8b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17ccfda9afde4441cfd1d4df5fe9622d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebcc9443a8230fb9f3726fc7cb6b3521.png)
您最近一年使用:0次