如图,抛物线
经过
、
、
三点,点
为抛物线上第一象限内的一个动点,
交
于点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/e2a97a19-b10e-4c80-89b8-f89148f5e468.png?resizew=363)
(1)求抛物线所对应的函数表达式;直接写出直线
的表达式;
(2)当
时,求点D的坐标;
(3)以
为对角线,作菱形
,使点N在
的右边,且
,求点N与y轴的最大距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2375a27ead9549550676d4e6a2b47243.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f515842db016eaea3d3f1e0e9418aea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7641baffd700f0c577d001e9d7a6c20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4071326e546d73b4cb4b362f1166716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8a4b91763add3ee3a9f0dc1937398d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/20/e2a97a19-b10e-4c80-89b8-f89148f5e468.png?resizew=363)
(1)求抛物线所对应的函数表达式;直接写出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3620030e8808da46df97330103827913.png)
(3)以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccfb05bcbb3107a1464bc9c28c2ad07e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b55ee997ca9e39178f4d9cda0c2e640a.png)
更新时间:2024-03-21 10:56:28
|
相似题推荐
解答题-问答题
|
适中
(0.65)
名校
【推荐1】已知抛物线
的顶点为
,且经过点
,
关于x轴对称的抛物线为
.
(1)求抛物线
的表达式;
(2)点E在x轴上方的抛物线
上,过点E作
轴,与抛物线
交于点F(点E在点F的左侧),那么在抛物线
上是否存在点M、点N,使得四边形EFMN是矩形,且其长与宽的长度之比为
?若存在,求出点F的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af81ebdb1df099b054909f9d9ab73928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed18bd80c6c4142f68e89f4ad44570b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbd49bf20f987c05b4d36e31549075c.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
(2)点E在x轴上方的抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0450e9660d59d577a0cec74b72950f81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbd49bf20f987c05b4d36e31549075c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d631fb2d6c29da54d74b74f6ae1c8cea.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】在平面直角坐标系xOy中,抛物线y=ax2﹣2ax+a﹣4(a≠0).
(1)若抛物线过(3,0),求a的值;
(2)求抛物线y=ax2﹣2ax+a﹣4(a≠0)的对称轴和顶点坐标;
(3)在(1)条件下,若A(2n﹣3,y1),B(3n+4,y2)为抛物线对称轴两侧的点,且y1>y2,求n的取值范围.
(1)若抛物线过(3,0),求a的值;
(2)求抛物线y=ax2﹣2ax+a﹣4(a≠0)的对称轴和顶点坐标;
(3)在(1)条件下,若A(2n﹣3,y1),B(3n+4,y2)为抛物线对称轴两侧的点,且y1>y2,求n的取值范围.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】在矩形ABCD中,AB=6,BC=8,沿对角线AC将矩形分成两个直角三角形,其中△ABC不动,△A'C'D沿射线CA方向平移.若四边形ABC'D是菱形,求CC'的长度.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/17/8a7fc538-4a26-4f31-939b-df6f8b9d2a92.png?resizew=338)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】如图,菱形ABCD的周长为20,对角线AC长为
,点E、F分别为AC、BC边上的动点.
![](https://img.xkw.com/dksih/QBM/2020/5/13/2461875012304896/2462297315868672/STEM/f4c0468c-e94d-416d-bbd8-578861cbdc81.png?resizew=218)
(1)直接写出菱形ABCD的面积:_______;
(2)直接写出BE+EF的最小值_______;并在图中作出此时的点E和点F.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c19a9e99072c37a49b4eb21ae61bef.png)
![](https://img.xkw.com/dksih/QBM/2020/5/13/2461875012304896/2462297315868672/STEM/f4c0468c-e94d-416d-bbd8-578861cbdc81.png?resizew=218)
(1)直接写出菱形ABCD的面积:_______;
(2)直接写出BE+EF的最小值_______;并在图中作出此时的点E和点F.
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】在
中,
,以C为圆心,r为半径作圆.
![](https://img.xkw.com/dksih/QBM/2022/10/25/3095385151586304/3096607086215168/STEM/d6c04fecc8dd449d8909e20c4518b0f4.png?resizew=122)
(1)若
与AB相切,求r的值;
(2)当r的取值不同,
与线段AB的公共点的个数也不同.请直接写出⊙C与线段AB的公共点的个数及对应的r的取值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3c65edad25ddd666cdce0d7e5afefc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2abbe1a090adc8447a84cf70700e3b48.png)
![](https://img.xkw.com/dksih/QBM/2022/10/25/3095385151586304/3096607086215168/STEM/d6c04fecc8dd449d8909e20c4518b0f4.png?resizew=122)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.png)
(2)当r的取值不同,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/669e8dfb2b45e6f74d86408343a18fe2.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,
与
相切于点
,
交
于点
,
的延长线交
于点
,
是
上不与
,
重合的点,
.
(1)求
的大小;
(2)若
的半径为
,点
在
的延长线上,且
,求证:
与
相切.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2c3d2cba96f6f03520c0b3f6e4da03e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f3018c687427b6257767eda4a8c6612.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/25/6d40132f-c408-489d-92bb-fa01f665af94.png?resizew=243)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb3de20ba8bda63c650ef571be155702.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4347ae2098acd02d3eba6d9f5847e8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐1】如图,直线
(
为常数)分别与
轴、
轴交于点
,
,抛物线
与
轴交于点
和点
(点
在点
的左侧).
![](https://img.xkw.com/dksih/QBM/2022/10/13/3086916467073024/3090886804381696/STEM/21b33048c71e42eb88d200360d69523b.png?resizew=153)
(1)求直线
的表达式;
(2)求点
和点
的坐标;
(3)若直线
与
轴垂直,在点
与点
之间移动,且与直线
(
为常数)交于点
,与抛物线
交于点
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf9fe5cadff9d1d6b63680bec6721bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9e4431f26fd8f695d197e07e57a0530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fcf9bfbf771cb6118f8e631724314e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e20028f274e54d0f85325eaa33a4710.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/509b7162788298fd60d798f44fc7e6e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e8845cf3f300a5351a683187d72ef75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://img.xkw.com/dksih/QBM/2022/10/13/3086916467073024/3090886804381696/STEM/21b33048c71e42eb88d200360d69523b.png?resizew=153)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf9fe5cadff9d1d6b63680bec6721bd.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
(3)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a159de0b2d9eb1ae0b7e664e64d3c6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ffb694021b52653de5141ae27ba6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cf9fe5cadff9d1d6b63680bec6721bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9e4431f26fd8f695d197e07e57a0530.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e8845cf3f300a5351a683187d72ef75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655b6a742dbacdab5aaa298007663dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】如图,已知抛物线
与x轴交于A,B两点,与y轴交于C点,顶点为D,其中
,
.直线
经过B,C两点.
(1)求直线
和抛物线的解析式;
(2)在抛物线对称轴上找一点M,使
最小,直接写出点M的坐标;
(3)连接
,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c052d7af2f98d95bac8725b608fba0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89c1972246a0a3d1c987d25205dbdd99.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/3/f47c74f5-8339-4b8a-a1ce-88c6d884ca7d.png?resizew=132)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)在抛物线对称轴上找一点M,使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dd50f7b773530824a9b69a1d57073f0.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1985812eaff9c01d050022078693fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661ff55b5ebbadfb600989af3cfce2fd.png)
您最近一年使用:0次