在一个边长为3的正方形中挖去一个边长为
的小正方形,如果设剩余部分的面积为y,那么y关于x的函数解析式是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a612560aa50cbdf4204a7cfe9a5abc0.png)
23-24九年级上·上海浦东新·期末 查看更多[2]
更新时间:2024-01-13 08:29:40
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【知识点】 图形问题(实际问题与二次函数)
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【推荐1】抛物线
的顶点为
,已知一次函数
的图象经过点
,则这个一次函数图象与两坐标轴所围成的三角形面积为__________ .
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【推荐2】如图,已知
中,
,
边上的高
,
为
上一点,
,交
于点
,交
于点
,则
的面积最大值为_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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