如图,曲线BRA是一段二次函数的图象,B在y轴上,A在x轴上,R为抛物线段上一动点,以R为切点的抛物线的切线与x轴交于P点,与y轴交于Q点,已知抛物线段上存在一点D到x,y轴的距离分别为
,
,且OA=1,OB=2.过B作
轴,与PQ交于C.
![](https://img.xkw.com/dksih/QBM/2022/7/13/3021844094156800/3022691948642304/STEM/476d734678fd4d3095aeec8ded54c386.png?resizew=151)
(1)求抛物线段BRA的方程;
(2)求图中阴影部分的面积取得最小值时,R点到y轴的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2146aec59309d1544ece1d028a17e394.png)
![](https://img.xkw.com/dksih/QBM/2022/7/13/3021844094156800/3022691948642304/STEM/476d734678fd4d3095aeec8ded54c386.png?resizew=151)
(1)求抛物线段BRA的方程;
(2)求图中阴影部分的面积取得最小值时,R点到y轴的距离.
更新时间:2022-07-15 00:25:25
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【推荐1】已知二次函数
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(2)求
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【推荐2】已知二次函数
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【推荐3】已知函数
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【推荐1】已知函数
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(2)若存在
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【推荐2】已知函数
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