1 . 将函数
的图象上所有点的横坐标伸长到原来的2倍,纵坐标不变,得到函数
的图象.
(1)求
的解析式与最小正周期;
(2)若
,
,求
,
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/325f9e2f7784ebdd64292e805884dfa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73387a4ccf38c8da46b698b2a8a98152.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d394016b9fecac73f38cbc4ff18dee2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9146fc0a63e5c14a8fa46573e60c07ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b986672a23ad322d79e9e18c5d3bc0c.png)
您最近一年使用:0次
2024-05-11更新
|
181次组卷
|
2卷引用:甘肃省白银市2023-2024学年高一下学期5月阶段性检测数学试题
2 . 若
.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e304cf018473bb54edb166fcd6502b.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef75d4f20a2c300d7549257a69b30b5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e304cf018473bb54edb166fcd6502b.png)
您最近一年使用:0次
3 . 养鱼是现在非常热门的养殖项目,为了提高养殖效益,养鱼户们会在市场上购买优质的鱼苗,分种类、分区域进行集中养殖.如图,某养鱼户承包了一个边长为100米的菱形鱼塘(记为菱形
)进行鱼类养殖,为了方便计算,将该鱼塘的所有区域的深度统一视为2米.某养鱼户计划购买草鱼苗、鲤鱼苗和鲫鱼苗这三种鱼苗进行分区域养殖,用不锈钢网将该鱼塘隔离成
,
,
三块区域,图中
是不锈钢网露出水面的分界网边,E在鱼塘岸边
上(点E与D,C均不重合),F在鱼塘岸边
.上(点F与B,C均不重合).其中△
的面积与四边形
的面积相等,△
为等边三角形.
的长.
(2)已知不锈钢网每平方米的价格是20元,为了节约成本,试问点E,F应如何设置,才能使得购买不锈钢网所需的花费最少?最少约为多少元?(安装费忽略不计,取
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711a854e969c99cd377f93f2e1d0c2fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261790c66cc71ee3898afabad0c09f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1fa63411b334ce13037ac0e81166e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f636f76d550dfb593a25eb680cff556.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/711a854e969c99cd377f93f2e1d0c2fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ddc76d96d6951ebfef3fe63892a1114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
(2)已知不锈钢网每平方米的价格是20元,为了节约成本,试问点E,F应如何设置,才能使得购买不锈钢网所需的花费最少?最少约为多少元?(安装费忽略不计,取
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/181d50b044b3a7bc83ecd1b36e8ad89b.png)
您最近一年使用:0次
4 . 若
.则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f27358001fd87bdf778d848a0f791c9.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
5 . 若
,
,
,
在复平面内所对应的点分别为A,B,C,D.若四边形ABCD为平行四边形,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef015c99536d13f1386bbb9a1dcaecea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/499634efa50af738a0d0aa5b5f65e8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21ec0540f3d31edfc5377bd0bf7c2e36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b29a77cfdb8d2a0b684389921e1496c.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
解题方法
6 . 设集合
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71d45e192a95a3a84401a25e879b1ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a44bed35195864057ac3609b4e84badf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
7 . 若△ABC的内心与外心分别为N,O,且
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7788830ed1cb3b9c5988f70f43595f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
A.![]() |
B.点N到AB的距离为![]() |
C.向量![]() ![]() ![]() |
D.![]() |
您最近一年使用:0次
解题方法
8 . 若
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e25bc0e6d06eee13673607f4d5f601.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea116289db2e01b1ba086ee1d7941e39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e76cb23884ee2464e8df9ece21bd5122.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
9 . 已知函数
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f4d6e46d489ebe507c8df7d2856621b.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2024-05-08更新
|
350次组卷
|
3卷引用:甘肃省白银市2023-2024学年高一下学期5月阶段性检测数学试题
10 . 已知集合
,集合
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0efcc8cda62cc39b86e95bc21903aef3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f59941f16b70148b465538da5d57483.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4b9b470218359a4a47be9244980489e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次