如图,抛物线
(
、
为常数)与
轴交于
、
两点,与
轴交于
点,直线
的函数关系式为
.
点坐标;
(2)已知点
是线段
上的一个动点,过点
作
轴的垂线
分别与直线
和抛物线交于
、
两点,当
为何值时,
恰好是以
为底边的等腰三角形?
(3)在(2)问条件下,当
恰好是以
为底边的等腰三角形时,动点
相应位置记为点
,将
绕原点
顺时针旋转得到
(旋转角在
到
之间);
①探究:线段
上是否存在定点
(
不与
、
重合),无论
如何旋转,
始终保持不变,若存在,试求出
点坐标;若不存在,请说明理由;
②试求出此旋转过程中,
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39f4872dbfe4772edbfcfb8f685dd2ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e3decaa07c992611050f12f0e6c7be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/830b8db778b49fecdf4d57c7f9cbf349.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b476509d73c4a0091277b6fd5605aab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f2281cb6df0c3c518ce5ed19a02b57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(3)在(2)问条件下,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f2281cb6df0c3c518ce5ed19a02b57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da895d8bd043625a0839128252130d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3319ff1fccda7edf5514db4bcbdb33c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235d495d88b8e51f89e2e4da27328025.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
①探究:线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90746d4ec8c290dea6275633ae578fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
②试求出此旋转过程中,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42df0a8ad49d2b7531868a751212d1ac.png)
更新时间:2024-05-21 20:16:25
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】在
中,
,
,点
在边
上,
,将线段
绕点
顺时针旋转至
,记旋转角为
,连接
,
,以
为斜边在其一侧作等腰直角三角形
,连接
.
时,请直接写出线段
与线段
的数量关系;
(2)当
时,
①如图2,(1)中线段
与线段
的数量关系是否仍然成立?请说明理由;
②如图3,当
,
,
三点共线时,连接
,判断四边形
的形状,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0cf3de61b5492989ae2002e19de770a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d97dc3b752832906de41447bb58a341.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261790c66cc71ee3898afabad0c09f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddd284be60584dfae454b1a125468947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01e915c7310f3781887a1afb99dbf949.png)
①如图2,(1)中线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
②如图3,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/910936ec9fb419d51ce2f5ea817f8401.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,
与
都是等边三角形,边长分别为
和
,连接
、
,
为
高,连接
,
为
的中点.
(1)求证:
;
(2)将
绕点
旋转,当点
在
上时,如图
,
与
交于点
,连接
,求线段
的长;
(3)连接
,在
绕点
旋转一周的过程中,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f15347d7870120325031b981affdac48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/862730f28c12750ebea0af5edcac5fef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0213c5787a5a6b38d11bceca5567f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6b41d4070854edfaa24071137b314cb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/9/b07acdbb-9e6d-4cfb-be01-f7eb247ef0b3.png?resizew=474)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3adea2cdc3b64f1bf79265d4cb1425ae.png)
(2)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f15347d7870120325031b981affdac48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0215e13a9fb5574d5194aeb9507a98aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/967e9a89e4b6db4bdd7108d5f7af625d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/967e9a89e4b6db4bdd7108d5f7af625d.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07377d977ef6a8f518b3004564544e5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f15347d7870120325031b981affdac48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07377d977ef6a8f518b3004564544e5b.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】P为
内一点,连接
,在
中,如果存在两个三角形相似,那么称P是
的内相似点.
(1)如图①,在
中,
,
,
是
的内相似点,直接写出
的度数.
【深入思考】
(2)如图②,P是
内一点,连接
,
,从下面①②③中选择一个作为条件,使P是
的内相似点,并给出证明.
①
;②
;③
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1380fca1566e1c21f80513f707c12885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72149bfc31d0325713dc1511a69f998a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(1)如图①,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b8b98b2f83279a49e94d9f48c5e6f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7013cc4303c7ac5d0f03c85423f0c258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0433f8116768b42642a7f7e5977ce6.png)
【深入思考】
(2)如图②,P是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1380fca1566e1c21f80513f707c12885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74534ff77f391a58b074b3558fb8b6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d3e9158663137348ded8571a97f29e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7d0bfc9dd2fcaed819ccfd7959b0ef3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfde2b1c481ad9910f5868c8b4ebc671.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】已知
,延长
到
,使
.取
的中点
,连结
交
于点
.
(1)求
的值;
(2)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19a1bf64ba772922fe58b5322eb4bced.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00bab17635a999236e8d2e35017a208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/15/26521c2d-4db8-4835-9fa6-9acb2491ee35.png?resizew=160)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a24b71f64937b1848900d850372e1a.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d00be47dcb89793f14a2fd10f4c522b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02c48a0f07cead115cbec7422e523e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】在平面直角坐标系xOy中,抛物线
与x轴交于A,B两点(A在B的左侧).
(1)求点A,B的坐标及抛物线顶点坐标;
(2)已知点
,
,
在该抛物线上,比较
,
,
的大小,并说明理由.
(3)已知点
向右平移两个单位再向下平移一个单位得到点D,若抛物线与线段CD只有一个公共点,直接写出a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df061654f83c2b8d577f11145c4f3bc.png)
(1)求点A,B的坐标及抛物线顶点坐标;
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a17431f86f35afcf3ee7e0c4a9dee0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29b30c0ee0a2944451575bc47ea60f33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97ed1865d408ee79297578e989df8fca.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/9314bd1d7a6e070f4f2428f9a321804e.png)
(3)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c687b0afc479f751d74456e8f84a9612.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】已知二次函数
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/6/ca1bac80-6288-4ce8-9186-d516a025d304.png?resizew=170)
(1)若
,
,且该二次函数的图象过点
,求a的值;
(2)如图所示,在平面直角坐标系
中,该二次函数的图象与x轴相交于不同的两点
,
,其中
,
,且该二次函数的图象的顶点在矩形
的边
上,其对称轴与x轴,AC分别交于点M,N,
与y轴相交于点E,且满足
.
①求关于x的一元二次方程
根的判别式的值;
②若
,令
,求T的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df7fcf82e3fac415783957d0f17448f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/6/ca1bac80-6288-4ce8-9186-d516a025d304.png?resizew=170)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03837b3769eda7f0d3804cc5ad4a6d60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcb5bac75f36bb1dc5c8190d4dbe681d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc2d29199d181d4edeaadcee4862eeab.png)
(2)如图所示,在平面直角坐标系
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98ec3d75e53b990bc8f9a4622928dd21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b583230a32b774445332490c511989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7b0c34c4a6e7be6f08ef7b7829c4b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c983d456ac12b40aea1fd87e961c07b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c28e0a3d3d19cc1d35158ce619acb0ea.png)
①求关于x的一元二次方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13fa32c1e926f40a0722d106563777ef.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bcaa1d7ca0b2725ee1644324cfa8830.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f037c82ab3abd74386a0e48f54f69592.png)
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【推荐1】如图所示,抛物线y1=﹣x2与直线y2=﹣
x﹣
交于A,B两点.
(1)求A,B两点的坐标.
(2)根据图象回答:
①当x取何值时,y1的值随x的增大而增大?
②当x取何值时,y1<y2?
(3)求△AOB的面积.
(4)在x轴上是否存在一点P,使△AOP是等腰三角形?若存在,请直接写出点P的坐标;若不存在,请说明理由.
(5)抛物线上找一点Q,使得△ABQ是直角三角形,请直接写出Q点横坐标
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b8503f4706b8321e4e79a87eadea84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c0874f019492261eb175bdcc08c189d.png)
(1)求A,B两点的坐标.
(2)根据图象回答:
①当x取何值时,y1的值随x的增大而增大?
②当x取何值时,y1<y2?
(3)求△AOB的面积.
(4)在x轴上是否存在一点P,使△AOP是等腰三角形?若存在,请直接写出点P的坐标;若不存在,请说明理由.
(5)抛物线上找一点Q,使得△ABQ是直角三角形,请直接写出Q点横坐标
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/c39a4ef7-afb5-4c5e-aae5-6f56a11f5cb5.png?resizew=180)
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解答题-问答题
|
适中
(0.65)
名校
【推荐2】如图1,在平面直角坐标系中,抛物线
与x轴分别交于A、B两点,与y轴交于点C,连接
,其中
,
.
(2)点P是直线
上方抛物线上一点,过点P作
轴交
于点E,作
轴交
于点F,求
的最小值,及此时点P的坐标;
(3)如图2,x轴上有一点
,将抛物线向x轴正方向平移,使得抛物线恰好经过点Q,得到新抛物线y1,点D是新抛物线
与原抛物线的交点,点E是直线
上一动点,连接
,当
是以
为腰的等腰三角形时,直接写出所有符合条件的点E的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8ed1fce01430ae31294c29d626626f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/859bf9cae1ba707d53066042073251f9.png)
(2)点P是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/213144e25996b7fd3cd69d9c5ae56be2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf0215fcd72572bb524eca8a7fdc3f4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a3f43a64b78c184710d348797037503.png)
(3)如图2,x轴上有一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14dd75003428d5b4071aabbaa4d11cbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b6056134daade6c053b1f28e3ebc6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3525ddc5153fada64eaf14e50b536542.png)
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