如图,已知抛物线y1=-2x2+2与直线y2=2x+2交于A,B两点.
![](https://img.xkw.com/dksih/QBM/2019/12/2/2346566172770304/2346657006862336/STEM/d01bead29ef740759c03f0508569fa50.png?resizew=137)
(1)求A,B两点的坐标;
(2)若y1>y2,请直接写出x的取值范围.
![](https://img.xkw.com/dksih/QBM/2019/12/2/2346566172770304/2346657006862336/STEM/d01bead29ef740759c03f0508569fa50.png?resizew=137)
(1)求A,B两点的坐标;
(2)若y1>y2,请直接写出x的取值范围.
18-19九年级上·全国·单元测试 查看更多[10]
浙教版九年级数学上册_第一章__二次函数_单元检测试题安徽省宣城市四校2019-2020学年九年级1上学期11月月考数学试题云南省昆明市官渡区第一中学2019-2020学年九年级上学期期中数学试题广东省肇庆市高要区2018-2019学年九年级上学期期中数学试题河南省信阳市冯店一中 2020-2021 学年九年级上学期 期中数学试题湖北省随州市随县2020-2021学年九年级10月月考数学试题广西壮族自治区玉林市容县2021-2022学年九年级上学期期中数学试题浙江省海曙区雅戈尔中学等四校2022-2023学年九年级上学期期中检测数学试题浙江省宁波市集士港四校联考2022-2023学年九年级上学期期中数学试题安徽省合肥市2023-2024学年九年级上学期期中数学试题
更新时间:2019-12-02 21:08:48
|
【知识点】 待定系数法求二次函数解析式解读
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】如图,在平面直角坐标系中,已知四边形
是等腰梯形,A、B在x轴上,C在y轴上,
,
,
,
,抛物线
过A、B两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/28/95c87d97-5326-4d9d-92d6-fc2659fce130.png?resizew=365)
(1)求b、c;
(2)设点
为线段
上的一动点,
作
轴于点
,交抛物线于
,求三角形
面积的最大值
(3)当
在抛物线上时,线段
与y轴交于点E,F为线段
上一动点,求F到N点与到y轴的距离之和的最小值,并求此时F点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7110f606f3cdf9cd3078cca0c88d6837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c24a968c73e960698a572ab01e3698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/28/95c87d97-5326-4d9d-92d6-fc2659fce130.png?resizew=365)
(1)求b、c;
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcec4050ad922c18239c38effcc45403.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b7f2d127f95cdc93f524319f3edabf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21037e170bdbb322558e79c40c00b454.png)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐2】如图①,在平面直角坐标系xOy中,直线
与抛物线
在第一象限交于点A,点P为线段
上一点(不含端点),过点P作直线
轴,分别交x轴,抛物线
于点M,Q.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/12/2f2ebb3c-ed2a-4f4b-a067-56e71dbd3b27.png?resizew=356)
(1)若点A的横坐标为2,求a的值;
(2)过点A作
,垂足为N,求证:
;
(3)如图②,若过点Q的抛物线
与直线
交于点B,C (点B在C的左侧) ,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d585d2d6643471640905d234d9538c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e168f42a942af33d98880e72abd174a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/799266cb9575fa7fff4f1ba6784be642.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/12/2f2ebb3c-ed2a-4f4b-a067-56e71dbd3b27.png?resizew=356)
(1)若点A的横坐标为2,求a的值;
(2)过点A作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6f7134999c9ee97c8a11e00c161d145.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/389f8de869550f23d35f625ad7c9f15d.png)
(3)如图②,若过点Q的抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e2c2bbd8f9a40aa94745999b942e6cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d585d2d6643471640905d234d9538c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f69afec3d05ea3f37b289881d709764.png)
您最近一年使用:0次