10-11高一下·江苏南京·期末
1 . 一元二次不等式
的解集为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97e07ade7560a1179342ddecf4ce9dac.png)
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10-11高一下·江苏南京·期末
2 . 如图,互相垂直的两条公路
、
旁有一矩形花园
,现欲将其扩建成一个更大的三角形花园
,要求
在射线
上,
在射线
上,且
过点
,其中
米,
米. 记三角形花园
的面积为
.
(1)设
米,将
表示成
的函数;
(2)当
的长度是多少时,
最小?并求
的最小值;
(3)要使
不小于
平方米,则
的长应在什么范围内?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1de7da3ab92e70f135ea628a691167.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f325403cbedaac249c9a78d33da81a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b03bb56c7e76954b192bd8595a0865a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d1de7da3ab92e70f135ea628a691167.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5545fb971ac100c85492abf9bfc68a53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(3)要使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b3c7b2fb191ae29a355688cb15a7888.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://img.xkw.com/dksih/QBM/2011/7/7/1570251885789184/1570251891204096/STEM/2ef4d02c88ac489b885f8d184e0516d2.png?resizew=180)
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10-11高一下·江苏南京·期中
3 . .解下列不等式:
(1)
; (2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4c6316621e3ac48f4e256e8b6d6d622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ac4efe62f33e9b89cd713e98e2ae51a.png)
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