1 . 已知点
的坐标是![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d739c713e04e7c5bcdd7036894381fa4.png)
都是有理数,
分别是点
到
轴和
轴的垂线段,且矩形
(
为坐标原点)的面积为
,则点
可能出现在第几象限?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d739c713e04e7c5bcdd7036894381fa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14e902eb263971b466d0fcd91c56b453.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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2 . 求函数
经伸缩变换
后的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b41a628c4b3053a9f9669ba21e657f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdcc5ae338fcb329f95055634640bf87.png)
您最近一年使用:0次
3 . 已知函数
的图象经过坐标变换得到函数
的图象,求该坐标变换.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b161347f6a2fcfd9bf0acf1e8a03fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f18855961bf2f4310ef97057c8ed83f0.png)
您最近一年使用:0次
4 . 在同一平面直角坐标系中,经过伸缩变换
后,曲线
变为曲线
,求曲线
的方程,并判断其形状.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827a8e083f1cede8a016204efd5f4bd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a75c40fb96da3748c1796204a2c0a7c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次