如图所示,在平面直角坐标系
中,四边形
为正方形,点A、C分别在x轴负半轴,y轴负半轴上,点
,点B在第三象限内,点
在函数
的图像上
(2)连接
,记
的面积为S,设
,求T的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3241d7fedd89d85711acd7a2635298af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fcd6ffecd7655c535c170ac8aec74db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4294dfe3bd8940889be937ca8f0d9d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82c670df824845448c1bd42efdb2be2e.png)
(2)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d79f6bec0d2dab9b9efedfe86d1159b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357265c532428e886a643e8e653eec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeafa1a2d98f27804d276aa4a16f06c1.png)
更新时间:2024-05-15 10:57:58
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适中
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【推荐1】如图,已知抛物线
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(2)若P是抛物线上位于直线
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【推荐2】二次函数
的图象与x轴交于A,B两点(点A在点B左侧),与y轴交于点C.
(1)求
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(2)当
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(3)直接写出不等式
的解集是______.
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【推荐1】如图,一次函数
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【推荐2】已知:y=y1﹣y2,y1与x2成正比例,y2与x成反比例,且x=1时,y=3;x=﹣1时y=1.
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解答题-证明题
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适中
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【推荐1】定义:我们把对角线互相垂直的四边形叫做垂美四边形;性质:垂美四边形的对角线互相垂直.
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,
,
,已知
,
,求
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)如图
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
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(3)如图
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解答题-证明题
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【推荐2】如图,在边长为4的正方形ABCD中,点P在AB上从A向B运动,连接DP交AC于点Q.
![](https://img.xkw.com/dksih/QBM/2016/4/13/1574192637640704/1574192644136960/STEM/86687bef93f240c98385c57bf1e6a620.png)
(1)试证明:无论点P运动到AB上何处时,都有△ADQ≌△ABQ;
(2)若点P从点A运动到点B,再继续在BC上运动到点C,在整个运动过程中,当点P 运动到什么位置时,△ADQ恰为等腰三角形.
![](https://img.xkw.com/dksih/QBM/2016/4/13/1574192637640704/1574192644136960/STEM/86687bef93f240c98385c57bf1e6a620.png)
(1)试证明:无论点P运动到AB上何处时,都有△ADQ≌△ABQ;
(2)若点P从点A运动到点B,再继续在BC上运动到点C,在整个运动过程中,当点P 运动到什么位置时,△ADQ恰为等腰三角形.
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