如图,抛物线
与
轴的正半轴交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/21/72ebde02-a3ab-4f1f-8b0b-73b9cc52c764.png?resizew=135)
(1)求点
的坐标和该抛物线的对称轴.
(2)点
在
轴的正半轴上,
轴交抛物线于点
、
(点
在点
的左侧),设
,
①当
是
的中点时,求
的值;
②连结
,设
与
的周长之差为
,求
关于
的函数表达式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/572f286fb45b2757af63569ae0bc2e99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/21/72ebde02-a3ab-4f1f-8b0b-73b9cc52c764.png?resizew=135)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f5bdae58b98d168a3710c1be3f3323e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/554645462113f7c8e22f7ac28887f5c9.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
②连结
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ddaefacc47c655a9109654bbe2e6bae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2020-06-26 08:01:12
|
相似题推荐
解答题-问答题
|
困难
(0.15)
名校
【推荐1】抛物线C1:
交y轴于点M,且与抛物线C2关于y轴对称.
![](https://img.xkw.com/dksih/QBM/2022/3/19/2939868157984768/2964181133459456/STEM/d8149df1-07e1-4c1b-adda-95ccf7eddee9.png?resizew=374)
(1)求点M的坐标及抛物线C2的解析式;
(2)已知抛物线C1经过点(m,n),将点(m,n)向右平移3个单位长度,再向上平移3个单位长度,得到的点恰好落在抛物线C2上,求m,n的值;
(3)如图,点A在抛物线C1上横坐标为
.点B与点A关于y轴对称,且过点B的直线l1与抛物线C2有且仅有一个交点,平移直线l1与抛物线C2交于C,D两点,直线CM,DM与x轴分别交于H,E两点,设点H横坐标为h,点E横坐标为e,试求h和e之间的等量关系式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9dbf5b53ec0d131d129b0ae52b807f8.png)
![](https://img.xkw.com/dksih/QBM/2022/3/19/2939868157984768/2964181133459456/STEM/d8149df1-07e1-4c1b-adda-95ccf7eddee9.png?resizew=374)
(1)求点M的坐标及抛物线C2的解析式;
(2)已知抛物线C1经过点(m,n),将点(m,n)向右平移3个单位长度,再向上平移3个单位长度,得到的点恰好落在抛物线C2上,求m,n的值;
(3)如图,点A在抛物线C1上横坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01317332a203c898536b1d0459f51d23.png)
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【推荐2】如图,二次函数
的图象与
轴交于点
,
(点
位于对称轴的左侧),与
轴交于点
.点
为线段
上一点,过点
作直线
轴交图象于点
,
(点
在点
的左侧),且
.
(1)求该二次函数的对称轴及
的值.
(2)将顶点
向右平移
个单位至点
,再过点
作直线
的对称点
,若点
在
轴上方的图象上一点且到
轴距离为1,求
,
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52b87001bd2bb42d7eb1265c20ebd21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8daa3968d860f3b3d4e1c9d4cf6eb238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3728cba3c69aa7e321d7c4062a7e9883.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b516e4572f3871a4f02928dd50fc690.png)
(1)求该二次函数的对称轴及
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)将顶点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a1f07948e9258b482a2164ac871f90f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://img.xkw.com/dksih/QBM/2020/6/22/2490291937361920/2492949732147200/STEM/4da910035b7f48a989b31c0096146f94.png?resizew=189)
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困难
(0.15)
【推荐3】我们约定:若关于
的二次函数
与
同时满足
,
,
,则称函数
与函数
互为“
”函数.根据该约定,解答下列问题:
(1)若关于
的二次函数
与
互为“
”函数,求
与
图象的顶点坐标;
(2)对于任意非零实数
、
,其中
,点
与点
始终在关于
的函数
的图象上运动,函数
与
互为“
”函数.
①求函数
的图象的对称轴;
②函数
的图象是否经过某两个定点?若经过某两个定点,求出这两个定点的坐标;否则,请说明理由;
(3)在同一平面直角坐标系中,若关于
的二次函数
与它的“
”函数
的图象顶点分别为点
,点
,函数
的图象与
轴交于不同两点
,
,函数
的图象与
轴交于不同两点
,
.当
时,以
,
,
,
为顶点的四边形能否为正方形?若能,求出该正方形面积的取值范围;若不能,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e94556fc78e40aef7e9a3212f1ae24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5c56c4470b8458d43bff92423caf83a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d0923248504295ca6e2558fa4f26968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78908ea2f65b1af56be13743cf5c3faf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3293d68d4fafdc4f994c1de7af1ed05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a347759f439165ef07e58ab248fc41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea6d6822b337f87c3fcf4b3925b59e46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
(2)对于任意非零实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5b5bfb9990e6912ed3fc2e12411ad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52dfe42c4d5d2005677fb42b9d43b2b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b406c5e06b7790b2e481a8ce3f5e33c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f43747233189bf7c6d2229ee68a9a31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
①求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
②函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
(3)在同一平面直角坐标系中,若关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81c65925ceccb6d9ab0db26e82e7087c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e9351d4fe3184f8c2d8797528562433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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困难
(0.15)
真题
【推荐1】在平面直角坐标系中,点
为坐标原点,抛物线
(
是常数)经过点
.点
的坐标为
,点
在该抛物线上,横坐标为
.其中
.
(1)求该抛物线对应的函数表达式及顶点坐标;
(2)当点
在
轴上时,求点
的坐标;
(3)该抛物线与
轴的左交点为
,当抛物线在点
和点
之间的部分(包括
、
两点)的最高点与最低点的纵坐标之差为
时,求
的值.
(4)当点
在
轴上方时,过点
作
轴于点
,连结
、
.若四边形
的边和抛物线有两个交点(不包括四边形
的顶点),设这两个交点分别为点
、点
,线段
的中点为
.当以点
、
、
、
(或以点
、
、
、
)为顶点的四边形的面积是四边形
面积的一半时,直接写出所有满足条件的
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9401d424df4ad8192ec3cdb67005820.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da7544af9e0d48ac4a99c8d5290f789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b67c623950b5795d5fb4daeb8102a8df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d1d18e6130f4da5603785d46d5b4a2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4c78214e43a8b93f2a57072033cbcf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/30/a823ec14-c8dc-48af-8ec6-e1ce1123d2f5.png?resizew=193)
(1)求该抛物线对应的函数表达式及顶点坐标;
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(3)该抛物线与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02cfffe112cd4fbacc2683259c9134de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(4)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05de5eef286a1b48012246c0cf88a1c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be9040cff7e9e20dd2817ad9888237d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be9040cff7e9e20dd2817ad9888237d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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解答题-问答题
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困难
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真题
名校
【推荐2】已知抛物线y=ax2+bx+c经过A(2,0),B(3n﹣4,y1),C(5n+6,y2)三点,对称轴是直线x=1.关于x的方程ax2+bx+c=x有两个相等的实数根.
(1)求抛物线的解析式;
(2)若n<﹣5,试比较y1与y2的大小;
(3)若B,C两点在直线x=1的两侧,且y1>y2,求n的取值范围.
(1)求抛物线的解析式;
(2)若n<﹣5,试比较y1与y2的大小;
(3)若B,C两点在直线x=1的两侧,且y1>y2,求n的取值范围.
您最近一年使用:0次
【推荐1】如图,在平面直角坐标系
中,一次函数
(
为常数)的图像与
轴交于点
,与
轴交于点
,以直线
为对称轴的抛物线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
,
,
为常数,且
)经过
、
两点,并与
轴的正半轴交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/6/3ebec5e8-28ea-4bd0-8cf2-0d5f56fcf5c3.png?resizew=160)
(1)求
的值及抛物线的函数表达式;
(2)若
是抛物线对称轴上一动点,
周长最小时,求出
的坐标;
(3)是否存在抛物线上一动点
,使得
是以
为直角边的直角三角形?若存在,求出点
的横坐标;若不存在,请说明理由;
(4)在(
)的条件下过点
任意作一条与
轴不平行的直线交抛物线于
,
两点,试问
是否为定值,如果是,请直接写出结果,如果不是请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f2beb91f10d2d8f2aa0dcc3f5cd1598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf9ebc750f290b4efbe91f3477967fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b42fa51cf2cfb364431cfba5d138ed84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/679353e656a54993c041ebd39ec7b31b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66c6ecdf8ced933e8e6657196acc924f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/6/3ebec5e8-28ea-4bd0-8cf2-0d5f56fcf5c3.png?resizew=160)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65fbd5e25a4186845a78a9aadd8d4582.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)是否存在抛物线上一动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48fd22ae0d5cc1497816bbb86dde0652.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(4)在(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b70b32e7c9d83d0e7e09c0f3c3f676d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93895f814f136d8fda3353e1dbe5aaba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/925f199d8da7f999f50bd7f86c781631.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐2】已知抛物线
(
为常数,
)的顶点为
.
(1)当
时,求该抛物线顶点
的坐标;
(2)若该抛物线与
轴交于点
,
(点
在点
左侧),与
轴交于点
.
①点
是该抛物线对称轴上一个动点,当
的最小值为
时,求该抛物线的解析式和点
的坐标.
②连接
,与抛物线的对称轴交于点
,过点
作
,垂足为
,若
,求该抛物线的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7da3f37830a57a91b142e78bc37ac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e34f42b3be15518c29e3689c9fe6d6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7a1d739890a8951586e23b78b035bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)若该抛物线与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
①点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae783fadab00a561411fb43d6ad6d01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
②连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65334978b0519b379910dfc4acf8344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320fc87c8bac3d041de0d10747867588.png)
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