在平面直角坐标系中,O为坐标原点,抛物线
交x轴的负半轴于点A,交x轴的正半轴于点B,交y轴于点C,连接AC,且
.
![](https://img.xkw.com/dksih/QBM/2022/3/4/2928883002163200/2931348996718592/STEM/6b3fa259-6132-4ed7-aba9-210543fac30d.png?resizew=240)
![](https://img.xkw.com/dksih/QBM/2022/3/4/2928883002163200/2931348996718592/STEM/04d8e950-273f-443d-9971-048b5396212a.png?resizew=225)
![](https://img.xkw.com/dksih/QBM/2022/3/4/2928883002163200/2931348996718592/STEM/cc92ca64-f27d-4708-9ecf-3717d99fc568.png?resizew=219)
(1)如图1,求抛物线的解析式;
(2)如图2,点P在第三象限的抛物线上,连接BP交y轴于点D,设点P横坐标为t,线段CD的长为d,求d与t之间的函数关系式(不要求写出自变量t的取值范围);
(3)如图2,在(2)的条件下,点E在线段OB上,且
,连接DE,F在y轴正半轴上,连接BF交抛物线于点G,
,若
,求点G的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95fff2c0fc135212c7e3f8a62f5d3f13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7928177cc4665090ad876f78f685a7.png)
![](https://img.xkw.com/dksih/QBM/2022/3/4/2928883002163200/2931348996718592/STEM/6b3fa259-6132-4ed7-aba9-210543fac30d.png?resizew=240)
![](https://img.xkw.com/dksih/QBM/2022/3/4/2928883002163200/2931348996718592/STEM/04d8e950-273f-443d-9971-048b5396212a.png?resizew=225)
![](https://img.xkw.com/dksih/QBM/2022/3/4/2928883002163200/2931348996718592/STEM/cc92ca64-f27d-4708-9ecf-3717d99fc568.png?resizew=219)
(1)如图1,求抛物线的解析式;
(2)如图2,点P在第三象限的抛物线上,连接BP交y轴于点D,设点P横坐标为t,线段CD的长为d,求d与t之间的函数关系式(不要求写出自变量t的取值范围);
(3)如图2,在(2)的条件下,点E在线段OB上,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1752574b98346cd1f7a1232ab9910047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bd273b3f9e1a2a6d3a37e7e9c36c0f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152800937e55383e672bb5b51d336087.png)
更新时间:2022-03-07 23:07:42
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相似题推荐
解答题-问答题
|
较难
(0.4)
名校
【推荐1】在平面直角坐标系中,抛物线
与
轴交于
,
两点,与
轴交于点
,连接
,点
是第一象限的抛物线上一动点.
(1)求抛物线的解析式;
(2)过点
作
于点
.
①若
,求
点坐标;
②过点
作
轴于点
,交
于点
,连接
,当
的周长取得最大值时,抛物线上是否存在一点
,使
,如果存在,请求出点
的坐标,如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63d8de071a9c22c96a59b172d76c127e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241ce9bd28046ce9b90f43b391132884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42f05b013e4b7166cbc87c5a83d6a85.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(1)求抛物线的解析式;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68fbbd17c89f03dbb61cd6ffdb9a0344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0487ebca22d4aa1233073f81fd70a424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
②过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/967e7d3f5d610bbb4a9859bd15fa382d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc21d1127aab9d4e5be4986c1ee85e9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47389c3e1e9deae09f2ca5fff6fce1fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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【推荐2】如图,抛物线
与
轴交于
,
两点,与
轴交于点
,抛物线的对称轴交
轴于点
,已知
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/7c52858f-1f13-4ad4-b07f-af5d69992aed.png?resizew=285)
(1)求抛物线和直线
的函数解析式;
(2)若点
是线段
上的一个动点,过点
作
轴的垂线与抛物线相交于点
,求四边形
的最大面积;
(3)在抛物线的对称轴上是否存在一点
,使得
是以
为腰的等腰三角形?如果存在,请直接写出点
的坐标,如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bac38c104f5ed9eb78722f3fa438453.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/d053b14c8588eee2acbbe44fc37a6886.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a525534689bd2701205d4ab17574c39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff6b7670302e7015123b9446afab1f27.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/16/7c52858f-1f13-4ad4-b07f-af5d69992aed.png?resizew=285)
(1)求抛物线和直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f18bba7cc8a77f309be6bfe17335aa.png)
(3)在抛物线的对称轴上是否存在一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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【推荐1】如图,二次函数
的图象与直线
交于
、
两点.
的解集:______;
(2)求二次函数表达式;
(3)点E是线段
(包含A,B)上的动点,过点E作x轴的垂线,交二次函数图象于点P,交直线
于点N、若以点P,N,A为顶点的三角形与
相似,若存在,请求出点P的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e879263725e299745ff51d3c987ff7c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ca22e2dd18f8b9097b3ac60c75e7009.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fba20699c442ba18244e4c10622c6a75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/402ca5a419e7505abfd8df90263851f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbab052837b0c67270851cd0bcf592b6.png)
(2)求二次函数表达式;
(3)点E是线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/323eb2e41f461ac655012a986d5a27bb.png)
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【推荐2】如图,四边形ABCD中,AD
BC,AD⊥AB,AD=AB=1,DC=
,以A为圆心,AD为半径作圆,延长CD交⊙A于点F,延长DA交⊙A于点E,连结BF,交DE于点G.
![](https://img.xkw.com/dksih/QBM/2022/4/20/2962134654279680/2963681727381504/STEM/be1f82754e6d4440bbb60df23cf85822.png?resizew=217)
(1)求证:BC为⊙A的切线;
(2)求cos∠EDF的值;
(3)求线段BG的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9bfa68259d7a331be323b2038d628a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://img.xkw.com/dksih/QBM/2022/4/20/2962134654279680/2963681727381504/STEM/be1f82754e6d4440bbb60df23cf85822.png?resizew=217)
(1)求证:BC为⊙A的切线;
(2)求cos∠EDF的值;
(3)求线段BG的长.
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名校
【推荐1】如图,抛物线经过
的三个顶点,其中O为原点,
,
,点F在
上运动,点G在直线
上方的抛物线上,
,
于点E,交
于点I,
平分
,
,
,连接
.
的面积;
(2)当点F运动至抛物线的对称轴上时,求
的面积;
(3)试探究
的值是否为定值?如果为定值,求出该定值;不为定值,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/372629a8666de1e9bac3e7daadcac7b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8930fec6ef05fff19c3045363ed4ac6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba3b11b96b6b8505bb79a2a6175ea126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/261a995baf0cd2adc1a8293f5855443e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143e21a5b924b03e9042d654d44a5eea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/781ccc2cdcc1683d5a1366ebce65e689.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/087f0c2c48436aa094bf4aae02906f68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5948eee70ce6da78160b86786ccbe5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83f1f880e5ffbff036953acaca90c41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/372629a8666de1e9bac3e7daadcac7b6.png)
(2)当点F运动至抛物线的对称轴上时,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/507ed891293f5b9f54304df66ca05949.png)
(3)试探究
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/012f96e2cb5ad88dd24411fd7748795f.png)
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【推荐2】如图,函数
的图象经过点
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/1/56879533-b084-4573-ba20-e6f4ea2f6744.png?resizew=150)
(1)求
关于
的函数解析式.
(2)当
时,求
的值.
(3)点
在函数
的图象上,其横坐标为
,将点
向右平移
个单位得到点
,连接
,以
为边向上作正方形
.
①当点
在函数
的图象上时,直接写出
的取值范围.
②将函数
的图象在正方形
内部(包括边界)的部分记为图象
,设图象
的最高点的纵坐标与最低点的纵坐标的和为
,直接写出
时
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37d64fdac786d4ad00466e1dbf3a5774.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40630a669f4eedf626bc24851df10c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e894101c52591ac320eed1c9b452f30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2cb598981eb7e3c872e9a961c4422e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/1/56879533-b084-4573-ba20-e6f4ea2f6744.png?resizew=150)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50866229ec5a3640fb250f9bd2192b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e430f13f42cf2d44aa0f0e20b959684f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e430f13f42cf2d44aa0f0e20b959684f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/142afc99b39d047b60b49b8a89651847.png)
①当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
②将函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/142afc99b39d047b60b49b8a89651847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2966d1540baad387615db8082d842d6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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