已知二次函数
(a为常数).
(1)若二次函数
的图象经过点
,求a的值.
(2)若二次函数
的图象上有两点分别为M、N,M点横坐标为
,N点横坐标为
,设M、N两点之间的图象为G(包含端点).
①设坐标原点为O,连接
、
、
,若线段
垂直于y轴,求
的面积.
②当
时,若图象G的最高点与最低点的纵坐标之差为h,求h与a之间的函数关系式,并写出自变量的取值范围.
③将点
向上平移2个单位长度得点B,连接
,以线段
为边向右作正方形
.若图象G与正方形
的边只有两个交点时,直接写出a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe979bfeb62679f78d42450b48ff4d6.png)
(1)若二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe979bfeb62679f78d42450b48ff4d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5265d99095b635f62c7915298ec0e963.png)
(2)若二次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe979bfeb62679f78d42450b48ff4d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d360794828cac510eae1d40d88b64384.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05de636879810855dab27451897e858e.png)
①设坐标原点为O,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4cfef623a9534b5708df5f95f1760a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5dbfcff5c8b5d4e312a9247b2b8b0a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4f02028a3847c4807c2d3cf0ea7efb8.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb8134a8cd59ed2a5199e7592d9c7d1.png)
③将点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9c730266ecf448c14608e24d37b986.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
2023·吉林长春·二模 查看更多[2]
更新时间:2023-06-07 16:40:21
|
相似题推荐
解答题-计算题
|
困难
(0.15)
【推荐1】如图,在平面直角坐标系中,抛物线
与
轴交于
,
两点,交
轴于点
.
(2)点
是直线
上方抛物线上的一动点,过点
作
轴交
于点
,在
轴上取一点
,使得
,求
的最大值及此时点
坐标;
(3)将原抛物线沿射线
方向平移
个单位长度得到新抛物线
,过点
作直线
垂直于
交
轴于点
,交新抛物线
于点
,求点
的横坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0d44326c214c7a5ecc3068a29ec96f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d57173ef4cd72eb270686875dfd623.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69fff64ee6ea236550185efc7ed1b598.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d7f1cf1911c8cd96e6dca4275b2443c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fa1b5b6051d500fe6c6f1c19c7ee49f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b09bfc38ea7512ad999424243ae5b14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)将原抛物线沿射线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b1bd1adfe4cc6566218f19970c2fd3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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【推荐2】已知抛物线y=ax2+bx+3的图象与x轴相交于点A和点B(1,0),与y轴交于点C,连接AC,有一动点D在线段AC上运动,过点D作x轴的垂线,交抛物线于点E,交x轴于点F,AB=4,设点D的横坐标为m.
![](https://img.xkw.com/dksih/QBM/2022/1/18/2897004353445888/2971469432750080/STEM/b59aee98-b1d4-4f90-8cf9-166fed34f679.jpg?resizew=500)
(1)求抛物线的解析式;
(2)当m=﹣1时,在x轴上找一点P,使PE+PC的值最小,求出此时点P的坐标;
(3)连接AE、CE,当△ACE的面积最大时,点D的坐标是 ;
(4)当m=﹣2时,在平面内是否存在点Q,使以B,C,E,Q为顶点的四边形为平行四边形?若存在,请直接写出点Q的坐标;若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/2022/1/18/2897004353445888/2971469432750080/STEM/b59aee98-b1d4-4f90-8cf9-166fed34f679.jpg?resizew=500)
(1)求抛物线的解析式;
(2)当m=﹣1时,在x轴上找一点P,使PE+PC的值最小,求出此时点P的坐标;
(3)连接AE、CE,当△ACE的面积最大时,点D的坐标是 ;
(4)当m=﹣2时,在平面内是否存在点Q,使以B,C,E,Q为顶点的四边形为平行四边形?若存在,请直接写出点Q的坐标;若不存在,请说明理由.
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【推荐3】在平面直角坐标系
中,已知点A在y轴正半轴上.
![](https://img.xkw.com/dksih/QBM/2024/2/3/3425317898207232/3433592118992896/STEM/84ed52bb3ef74ed3be9b0004c0303173.png?resizew=496)
(1)如果四个点
中恰有三个点在二次函数
(a为常数,且
)的图像上.
①
:
②如图1,已知菱形
的顶点B、C、D在该二次函数的图像上,且
轴,求点D的坐标;
③如图2,已知正方形
的顶点B、D在该二次函数的图象上,点B、D在y轴的同侧,且点B在点D的左侧,设点B、D的横坐标分别为m、n,试探究
是否为定值.如果是,求出这个值;如果不是,请说明理由.
(2)已知正方形
的顶点B、D在二次函数
(a为常数,且
)的图像上,点B在点D的左侧,设点B、D的横坐标分别为m、n,直接写出m、n满足的等量关系式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://img.xkw.com/dksih/QBM/2024/2/3/3425317898207232/3433592118992896/STEM/84ed52bb3ef74ed3be9b0004c0303173.png?resizew=496)
(1)如果四个点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f9cada4eb21e2e889f2964019d727d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf210c8c9e83e70f2d3ede1e18a5f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
②如图1,已知菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602f64f0c8a0fa105d583d698d0af3bd.png)
③如图2,已知正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64da75a02173c2a5eb40f4c68d0f4f36.png)
(2)已知正方形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf210c8c9e83e70f2d3ede1e18a5f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86c06778fd31160ebbb65153412cd30a.png)
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名校
【推荐1】如图1,抛物线
, 交x轴于A、B两点,交y轴于点C.当
时,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/7/02ab7b6d-1ec6-42cd-aec3-66b68134c08c.png?resizew=688)
(1)求抛物线的表达式;
(2)若点D是抛物线上第一象限的点.
①如图1,连接
,交线段
于点G,若
时,求D点的坐标;
②如图2,在①条件下,当点D靠近抛物线对称轴时,过点D作
轴,点H是
上一点,连接
,求
的最小值;
(3)如图3,F为抛物线顶点,直线
垂直于x轴于点E,直线
分别与抛物线对称轴交于M、N两点.试问,
是否为定值?如果是,请直接写出这个定值:如果不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8baed1bb5d5781eff891e656b2778991.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc65d6eb9b63f96d80b54ec9893aee8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a417f68c6538bfb63e729c047755b4ef.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/7/02ab7b6d-1ec6-42cd-aec3-66b68134c08c.png?resizew=688)
(1)求抛物线的表达式;
(2)若点D是抛物线上第一象限的点.
①如图1,连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1449ec49277e046df684280dd47b9c47.png)
②如图2,在①条件下,当点D靠近抛物线对称轴时,过点D作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea1cdf62cac33194e615d5640f70f7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/826c728050e3378921442ace20269ef6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9484c8aef4d73290c5a090bc91fd0d7.png)
(3)如图3,F为抛物线顶点,直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a929fca455b19682d2a26ecc302123d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cedbccc47b46d22a7df12e20e2e6f911.png)
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【推荐2】如图1,直线
与抛物线
交于
两点.
(1)直接写出
两点的坐标:_______;
(2)如图2,点
在
轴上运动,过点
作直线
轴,在点
运动的过程中,若
上恰有一点
,使得
,直接写出
的值:_______;
(3)如图3,将抛物线
及直线
整体向右平移一个单位长度,
对应点分别为
,平移后,新抛物线的顶点为
,直线
交x轴于
轴于
,点
是抛物线上
之间的一个动点,
交
于
交
轴于
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c31c4f39399ec245a67db2933ed639f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344ccbf79da6ad7e3709d6fa72efb756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/12/501358aa-c8c9-4996-b0a8-327ee4285054.png?resizew=554)
(1)直接写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
(2)如图2,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2d38c4bff43675583513a39d36d6fa4.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/11fc01344af3800a30595b9403086516.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f9b9bb0f509e6f3d30858efb217c1f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)如图3,将抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344ccbf79da6ad7e3709d6fa72efb756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b01d83543a84ec03a5514b612189ffcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb0628cecbfc98d390e5447d52414e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/877015f95492a1b3090bc6d1ced26dc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45292b2cbf7f84510ea196da767e2943.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e66b12019cdf68327d34c90dff7c04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba25c398b41939559a52518e8b251af6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/962f1aa48cdcce1f94d595aa46c850ac.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/1392e80306c23eb2369eba844434e782.png)
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解答题-问答题
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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)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐1】如图,在平面直角坐标系
中,抛物线
与
轴交于
、
两点,与
轴交于点
,对称轴为直线
,点
的坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/21/a4a7fd2f-243a-49c6-97d8-a32c580730f0.png?resizew=466)
(1)求该抛物线的解析式;
(2)点
为抛物线上一点(不与点
重合),连接
.当
时,求点
的坐标;
(3)在(2)的条件下,在对称轴上是否存在一点
,连接
,将线段
绕点
顺时针旋转
得到线段
,使点
恰好落在抛物线上?若存在,请求出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e59da5115d0dafea24822245f92c48.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/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/21/a4a7fd2f-243a-49c6-97d8-a32c580730f0.png?resizew=466)
(1)求该抛物线的解析式;
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9004d5dc40130c28fe7e379fe545b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)在(2)的条件下,在对称轴上是否存在一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4ca80c5dcdc6c8e3c5065462a9a2e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
解答题-问答题
|
困难
(0.15)
【推荐2】如图,抛物线
与
轴交于
两点,与
轴交于点
.
(1)直接写出抛物线
的解析式;
(2)如图①,有一定度为1的直尺平行于
轴.在点
之间平行移动,直尺两长边被线段
和抛物线
截得两线段
.设点
的横坐标为
,且
,试比较线段
与
的大小;
(3)如图②,将抛物线
平移得到顶点为原点的抛物线
,
是
轴正半轴上一动点,
.经过点
的直接
交抛物线
于
两点.当点
运动到某一个位置时,存在唯一的一条直线
,使
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9210c2d5aaf1148f273ade23a56723c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c4cf93b2b75cc913c12fc93f8adaa52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/10/21839607-287a-41b8-b856-6b354bf98851.png?resizew=349)
(1)直接写出抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)如图①,有一定度为1的直尺平行于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb8134c0bf1418693912b362cc71b00d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df50bb66a4b2789a59b2e09cc788230d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eb4337e61fdb8a9e216273edab4579c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
(3)如图②,将抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.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/5a85e4799889efeaca56d32fe6f3b1af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5ad58997b9dc0b341c9af08f0cd1fbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d484860d9392ecacc942edecd37b6dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次