如图1,点A在抛物线
对称轴右侧图像上,点B在y轴正半轴上,
,过B作
轴交抛物线对称轴右侧的图像于点C,设
.
时
①若
,求
的长;
②若
,求
的值;
(2)在
变化的过程中,图中始终有2条线段相等,请指出相等的线段并说明理由;
(3)如图2,点E为抛物线
顶点,F、G分别为对称轴左侧图像和对称轴上一点,且
,用无刻度的直尺和圆规过点G作x轴平行线.(直尺和圆规都限用一次 ,不写作法,保留作图痕迹)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfb573fb6f6f37fd615e35c4073c2919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3574de9c45d8e27a95a79000f5650204.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05de5eef286a1b48012246c0cf88a1c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3670246f45e63fb0a2457378e8b14b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c69a23d106fd34aa17b22e9c9a8de36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c96cb3ac8290e09c55d4eb336a8608.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac5b7660f05c875e7f0124cafca9f52e.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(3)如图2,点E为抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ebbfa58ad8cca1e72b7dc6ce36f13b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c31c9f6ee41257798d7740a2043e108.png)
更新时间:2024-05-27 10:15:54
|
相似题推荐
解答题-问答题
|
适中
(0.65)
【推荐1】如图,抛物线y=ax2+bx+c经过点A(﹣2,5),与x轴相交于B(﹣1,0),C(3,0)两点.
(1)求抛物线的函数表达式;
(2)点D在抛物线的对称轴上,且位于x轴的上方,将△BCD沿直线BD翻折得到△BC′D,若点C′恰好落在抛物线的对称轴上,求点C′和点D的坐标;
(1)求抛物线的函数表达式;
(2)点D在抛物线的对称轴上,且位于x轴的上方,将△BCD沿直线BD翻折得到△BC′D,若点C′恰好落在抛物线的对称轴上,求点C′和点D的坐标;
![](https://img.xkw.com/dksih/QBM/2020/4/20/2445737246957568/2446266819870720/STEM/9bf78660a69c4f3c85db1ba54f56c766.png?resizew=179)
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解答题-问答题
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适中
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【推荐2】已知二次函数
中,其函数
与自变量
之间的部分对应值如下表所示:
(1)当x=-1时,y的值为 ;
(2)点A(
,
)、B(
,
)在该函数的图象上,则当![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f7a03a9b6fc21286b7cce2ed7ecbd24.png)
时,
与
的大小关系是 ;
(3)若将此图象沿x轴向右平移3个单位,请写出平移后图象所对应的函数关系式: ;
(4)设点P1(m,y1)、P2(m+1,y2)、P3(m+2,y3)都在二次函数
的图象上,问:当m<-3时,y1、y2、y3的值一定能作为同一个三角形三边的长吗?为什么?=】
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
x | …… | 0 | 1 | 2 | 3 | 4 | 5 | …… |
y | …… | 4 | 1 | 0 | 1 | 4 | 9 | …… |
(2)点A(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f7a03a9b6fc21286b7cce2ed7ecbd24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8c36b5b48124b7dcc622a964d0ef6db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
(3)若将此图象沿x轴向右平移3个单位,请写出平移后图象所对应的函数关系式: ;
(4)设点P1(m,y1)、P2(m+1,y2)、P3(m+2,y3)都在二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
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解答题-证明题
|
适中
(0.65)
【推荐1】如图,
,
平分
,点
为
的中点,连接
交
于点
.
(1)求证:
(2)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0e65e147b109f2bbfd3a3f502bbc3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
(3)若
,
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b37de795fe67053bd59e4ca27b75e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa783be67f9c5bb06c08796ce22f82c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88929f4ba0851730d5f941d426b87548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e883f81c66ceef54d2d0556a68ed585.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/17/74127099-222f-490f-b37e-b4b6208db3ef.png?resizew=156)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49e7062bb011a81eb548ebe007727afc.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0e65e147b109f2bbfd3a3f502bbc3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ffb98f1e3c1317c0db403d3af04bdc.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c7c5675d8c687200645270dbfba9083.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df9a15966dde96392732e585e093b85b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa29fe6cd9eb51c184f6299d437375cb.png)
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解答题-作图题
|
适中
(0.65)
【推荐2】如图,等腰
中,
,
,点E是
边上一点,连接
,过点A作
于点F.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/11/1e26dc0a-ca00-48b7-9809-2293364fb371.png?resizew=138)
(1)尺规作图:(按要求完成作图,不写作法,保留作图痕迹,并标明字母)过点B作
于点G.
(2)在(1)的条件下,若
,
,求线段
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd967903ed5a6f640a5b801ec8be0070.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d384390f4e0a1e0abd4cc19382d94db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78a598a35e6a4bfb3a5f08b55b70bdc3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/11/1e26dc0a-ca00-48b7-9809-2293364fb371.png?resizew=138)
(1)尺规作图:(按要求完成作图,不写作法,保留作图痕迹,并标明字母)过点B作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff68b481fdf58ab09bae9fdd7715be2b.png)
(2)在(1)的条件下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e0c0a86deb65f22cc1f2196c084e2be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f21d8e7af78693e5da7957c8034e8bcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
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(0.65)
名校
【推荐1】如图,⊙O的半径
,AB是弦,C是AB上一点,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/17/7d78fd0d-7d43-4fd5-96ba-91caca29ae5c.png?resizew=140)
(1)求∠A的度数.
(2)求AB的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0620e51c0996b2c51a07b47e95c6d3ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a68215a94c076daafdb28ab8d1d04f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83ff26eeabfaef6e944082999e39e814.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/17/7d78fd0d-7d43-4fd5-96ba-91caca29ae5c.png?resizew=140)
(1)求∠A的度数.
(2)求AB的长.
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解答题-问答题
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适中
(0.65)
【推荐2】如图,平面直角坐标系中,分别以点
,
为圆心,以
,
为半径作
,
,
,
分别是
,
上的动点,
为
轴上的动点,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d433b68a1bd2bb57825df3bafb6f9f56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c692d4e8a1d63e503c497e1929ffc9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6f6558fef858bf27e9811c2d9426fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c20d0b44025a639ce3a92d639dae587.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6f6558fef858bf27e9811c2d9426fe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2bb1548ddc0e5536a35b1bd78c4e7cd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/a4e60c6b-3b4d-44e3-9f81-1f1b19a0bad4.png?resizew=182)
您最近一年使用:0次
解答题-证明题
|
适中
(0.65)
【推荐1】已知:如图,梯形ABCD中,AD∥BC,AC、BD交于点O,EF经过点O且和两底平行,交AB于E,交CD于F,求证:OE=OF.
![](https://img.xkw.com/dksih/QBM/2018/12/18/2099442881855488/2100771180519424/STEM/21f436ae967b48b38431eed31de33c8a.png?resizew=152)
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解答题-问答题
|
适中
(0.65)
【推荐2】已知:如图,在
中,
,
,
,点
由
出发沿
方向向点
匀速运动速度为
;点
由
出发沿
方向向点
匀速运动,速度为
;连接
.若设运动的时间为
,解答下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/23/90a2377e-c314-49af-9e21-0153954a1b32.png?resizew=188)
(1)当
为何值时,点
在
垂直平分线上
(2)当
为何值时,
为直角三角形?
(3)设
的面积为
,求
与
之间的函数关系式;
(4)是否存在某一时刻
,使线段
恰好把
的面积平分?若存在,求出此时
的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c566569e018673a2b187abdbe2b04a44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cc999161f71a84b371e574ef72deaad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc6f908723eb577a89649a518e6e84a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d547d729da5eb0f27685a37f08135c84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1da9dcf6c319174c9ea2b1ceaed1649a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4bf2ed4e49655ce765ba6ffbb6c7d28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eacd9c1ce5e65fec29c32f40d86b73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48ba95116dc790b935d65bf540799cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa4c8fb15d42df7576756d2ea1d532f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/23/90a2377e-c314-49af-9e21-0153954a1b32.png?resizew=188)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08075b3b73dd2609baad69a496fdd9a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08075b3b73dd2609baad69a496fdd9a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4898591767cc2b2d6436ce215d2db4.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4898591767cc2b2d6436ce215d2db4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb726730479054be5eccf16c7f3e430b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fcf9bfbf771cb6118f8e631724314e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08075b3b73dd2609baad69a496fdd9a8.png)
(4)是否存在某一时刻
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08075b3b73dd2609baad69a496fdd9a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c566569e018673a2b187abdbe2b04a44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08075b3b73dd2609baad69a496fdd9a8.png)
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