在平面直角坐标系中,抛物线
(
为常数)经过点
.点
是抛物线上一点,点
的横坐标为
,点
的坐标为
.
(1)求抛物线对应的函数表达式及顶点坐标;
(2)当
平行于
轴时,求
的值;
(3)将抛物线点
和点
之间的部分记为图象
,当
的最大值和最小值之差为1时,求
的取值范围;
(4)以
、
为邻边作平行四边形
,当对称轴将四边形分成两部分,且面积比为
时,直接写出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec7ad0f2993a79ca6bb933b9ac80f88f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/485d9b46d058d3598a2f7e4072ca3adb.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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/702b75b7997e915d310d12b87cd9b269.png)
(1)求抛物线对应的函数表达式及顶点坐标;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)将抛物线点
![](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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(4)以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04dd6033a0831ecb3c260736a96e3fe8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0217235a57aebe61c7b16ca81096c21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
更新时间:2024-04-20 20:58:26
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相似题推荐
解答题-问答题
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较难
(0.4)
【推荐1】抛物线
交
轴于
两点,交
轴于点
,直线
经过点
两点.
(1)求抛物线的解析式;
(2)若点
是直线
上方抛物线的一动点,当
面积取最大值时,求点
的坐标;
(3)连接
,将
绕点
旋转一周,在旋转的过程中,点
的对应点
,直线
分别与直线
交于点
,交
轴于点
,那么在
转过程中,是否存在恰当的位置,使
是以
为腰的等腰三角形?请求出所有符合条件的点
的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b64448aceaf2cd874e92b1465abee73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae6f48b9a53c0155a692509cf31f7e6.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/e235d7dd12f948f5ffb2e5afddc95612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0520e9675bc1b416e8b8f01eb69fd13.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/2/0a097ae0-6018-47f6-b4f2-52a3a18237d4.png?resizew=248)
(1)求抛物线的解析式;
(2)若点
![](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/0005e1ef60f6ddc5f9a83e3de1ef3b2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(3)连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/658c85db75e6d04157dadcac4a930332.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcef68b2fd06fc0b7abd47a79adc126.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4c92b5799d12ea37de46d7c942ce7a9.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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff39c7aa648afd1080206c8080ff79e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
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解题方法
【推荐2】直线
与
轴、
轴分别交于点
、
,抛物线
经过点
、点
,与
轴交于点
.
![](https://img.xkw.com/dksih/QBM/2020/7/4/2498576865894400/2498698479673344/STEM/87c9ce02-35f0-4982-85dd-86685587d54c.png)
![](https://img.xkw.com/dksih/QBM/2020/7/4/2498576865894400/2498698479673344/STEM/b4d32273-780f-4166-bab8-4f59751754df.png)
(1)求抛物线
的解析式;
(2)如图1,点
在
轴上,连接
,若
,求点
的坐标;
(3)如图2,将抛物线
平移,使其顶点是坐标原点
,得到抛物线
,平移直线
经过原点
,交抛物线
于点
.点
,点
是
第一象限内一动点,
交
于
点,
轴分别交
、
于
、
,试探究
与
之间的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/824421888de03d68e139f6f1abebac32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd1ec9d9f725ad4d601990c17ae16ec9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a18a7caa080988802ba1145b4fe4203.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://img.xkw.com/dksih/QBM/2020/7/4/2498576865894400/2498698479673344/STEM/87c9ce02-35f0-4982-85dd-86685587d54c.png)
![](https://img.xkw.com/dksih/QBM/2020/7/4/2498576865894400/2498698479673344/STEM/b4d32273-780f-4166-bab8-4f59751754df.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
(2)如图1,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/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93d24da28240535f9a6e686a9e6f6c30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)如图2,将抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2974f6e480ed5a0384aea78c50f1bbc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3dd18fb59dd5f8462fa34c3515698c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88e9f7d1272b7344346b58b660aa260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10109d34ef06c3e721fd2c7128c5b9ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81a3bcd3385a9fef291cfe6291d9e10c.png)
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【推荐1】综合与探究
如图,抛物线
与x轴交于A,B两点(点A在点B的左侧),与y轴交于点C,连接
.若点P在线段
上运动(点P不与点
重合),过点P作x轴的垂线,交抛物线于点E,交x轴于点F.设点P的横坐标为m.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/27/bb612ebc-f044-4963-b284-5e3d2ee07a06.png?resizew=317)
(1)求点A,B,C的坐标,并直接写出直线
的函数解析式.
(2)若
,求m的值.
(3)在点P的运动过程中,是否存在m使得
为等腰直角三角形?若存在,请直接写出m的值;若不存在请说明理由.
如图,抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b73ec2e51e8bf082ec95b5ce8348de68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/27/bb612ebc-f044-4963-b284-5e3d2ee07a06.png?resizew=317)
(1)求点A,B,C的坐标,并直接写出直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24d2934f84b3aa48d6e86746c052808e.png)
(3)在点P的运动过程中,是否存在m使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bef0db813a64ec6caa9373413dbf822d.png)
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【推荐2】已知y关于x的二次函数y=ax2﹣bx﹣2(a≠0).
(1)当a=-2,b=-4时,求该函数图象的顶点坐标;
(2)在(1)条件下,P(m,t)为该函数图象上的一点,若P关于原点的对称点P′也落在该函数图象上,求m的值;
(3)当函数的图象经过点(1,0)时,若A(
,y1),B(
,y2)是该函数图象上的两点,试比较y1与y2的大小.
(1)当a=-2,b=-4时,求该函数图象的顶点坐标;
(2)在(1)条件下,P(m,t)为该函数图象上的一点,若P关于原点的对称点P′也落在该函数图象上,求m的值;
(3)当函数的图象经过点(1,0)时,若A(
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d658e17b43c87fdafc631cfc12ca6c6a.png)
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【推荐1】如图,已知菱形ABCD的对角线相交于点O,延长AB至点E,使BE=AB,连结CE.
(1)求证:BD=EC;
(2)若AB=5, BD=6时,求△ACE的周长.
(1)求证:BD=EC;
(2)若AB=5, BD=6时,求△ACE的周长.
![](https://img.xkw.com/dksih/QBM/2020/4/2/2432826722000896/2433008866934784/STEM/f2d1f7b9a6ec43b896ac0f0cd73f3748.png?resizew=218)
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名校
【推荐2】如图,在
中,
,
是
边的中线,
,交
于点M,过点M作
交
的平行线
于点F,
交
于点N.
;
(2)求证:
平分
;
(3)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047dc9795efa99b6fb9fdf9778085dab.png)
![](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/d320f180419175d75eebc618cc458b39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1097a13c0408e0709fca27c0f1f5bcd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16a0df5c5dbb25fef935574942b32954.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c36ff76f9f1ee12db562cde7a58b8c3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b920f015c63f066a8ae00e3066b50e20.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57a0010a8cf9c70c41ca2839280dfdcc.png)
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【推荐1】如图,直线
与x轴,y轴分别交于B,C两点,抛物线
经过点B,点C,且与x轴的另一交点为A点,点P为抛物线上的一个动点,过点P作
轴于点D,交直线
于点E.
(2)若点P在第一象限内,当
时,求四边形
的面积;
(3)将
绕平面直角坐标系中某点逆时针旋转
,对应点为
,
,
,当
中有两个顶点落在抛物线上时,直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24edd2a1d145627d07330524017daf5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d8bf01092d97f3c2d199f25bda462b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f00d0ff8dd38da17167cf9b789eec0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)若点P在第一象限内,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b180891ae69c2d4d1359c1e3e084182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52be47fe8e641a61f1e902c717522a3c.png)
(3)将
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7ffcd1925a2b1259221c6a476152f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c02b54dc6b3e1bb6544f47d4c8743fcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
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解答题-问答题
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较难
(0.4)
【推荐2】如图,抛物线
经过
,
两点,与y轴交于点C,D为第一象限抛物线上的动点,连接AC,BC,DA,DB,DB与AC相交于点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/13fe7df5-c562-42b3-ab3a-2ab67bea05b4.png?resizew=115)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/b2285bc3-9477-4278-a58c-e893f9b27df8.png?resizew=115)
(1)求抛物线的解析式;
(2)如图,设
的面积为
,
的面积为
,当
时,求点D的坐标;
(3)如图,过点C作
轴,点M是直线CF上的一点,
交抛物线于点N,是否存在以C,M,N为顶点的三角形与
相似?若存在,请直接写出点M的坐标,若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ceba6b11658f2cc227b1f550ba25c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e95e84f5c91c910aaafc5e74dbfbdf59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42f05b013e4b7166cbc87c5a83d6a85.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/13fe7df5-c562-42b3-ab3a-2ab67bea05b4.png?resizew=115)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/b2285bc3-9477-4278-a58c-e893f9b27df8.png?resizew=115)
(1)求抛物线的解析式;
(2)如图,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbfa1a2af7e38d33634c462300df381f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7345443d66f1a4400c2c016f38e83dc8.png)
(3)如图,过点C作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3202e0433aa5e3ebd7ea156f5357205c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85f0a496d91ab96783ac789ac18c9f30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff36ac07c45c8d03cf3b7d8739c517ca.png)
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