如图,在平面直角坐标系中,O是坐标原点,抛物线
与x轴正半轴交于点A,与y轴正半轴交于点B,点C(-3,0),连接AB,BC.
(1)求直线AB的函数表达式;
(2)①点D在第三象限的抛物线上,当△ABC与△ADC面积相等时,求点D的坐标;
②在①的条件下,点E在第三象限,当
时,请直接写出点E的坐标为 .
(3)点F从点A开始以每秒0.5个单位长度的速度沿线段AC向点C运动,同时点G从点C开始以相同速度沿线段CB向点B运动,其中一个点停止运动时,另一个点也停止运动,过点F作FH
AB,交线段BC于点H,连接FG,在点F、G运动的过程中,当
时,请直接写出直线FH的函表达式为 .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2945f3bae13285490656cd2ddf2af7f4.png)
(1)求直线AB的函数表达式;
(2)①点D在第三象限的抛物线上,当△ABC与△ADC面积相等时,求点D的坐标;
②在①的条件下,点E在第三象限,当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3837789fde473d8d4b48d2593b77f19f.png)
(3)点F从点A开始以每秒0.5个单位长度的速度沿线段AC向点C运动,同时点G从点C开始以相同速度沿线段CB向点B运动,其中一个点停止运动时,另一个点也停止运动,过点F作FH
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e296a3deb15d04f324a6884c9b9a3ba.png)
![](https://img.xkw.com/dksih/QBM/2021/5/27/2730009811173376/2730984393039872/STEM/21e2fc17-c332-4e92-9480-b3522c91ca96.png)
更新时间:2021-05-28 21:04:52
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相似题推荐
解答题-问答题
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【推荐1】如果一个三角形的一个内角等于另一个内角的2倍,我们称这样的三角形为倍角三角形,并称这两个角的公共边为底边.
(1)如图1,在
中.按如下做法:
①作
的中垂线
:
②作
的角平分线与中垂线
交于点
;
③连接
并延长与
交于点
,得到
.
若按上述作法,得到的
是倍角三角形.则
与
的等量关系___________;
(2)如图2,在矩形
中,以
为底边做一个倍角三角形顶点
恰好落在
边上.若
,
.求
的长度.
(3)如图3,现有一块梯形板材
,
,
,
,
.工人师傅想用这块板材裁出一个
型部件,使得点
在梯形
的边
上,
为以
为底边且
的倍角三角形.是否存在满足要求的
?若存在,请确定点
位置(求出
的长);若不存在,请说明理由.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/11/45e3851f-4f15-44ec-aa5e-043d777c9c89.png?resizew=415)
(1)如图1,在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
①作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
②作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
③连接
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdc93e193fad261689949a52819753f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357265c532428e886a643e8e653eec9e.png)
若按上述作法,得到的
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357265c532428e886a643e8e653eec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404fc19da3e4da41e9147e9f0ca64957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3df0ba997bb8f5b2f2a2b677391ebc22.png)
(2)如图2,在矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a0367c3fe3c5c5dfefec87f641bbde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
(3)如图3,现有一块梯形板材
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f89deb952f57f4b3fa4887b098b7b91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57c6b0a6cb307c4c02f503831862f7d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b939af5ba06e279cce39396aaf0fae06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357265c532428e886a643e8e653eec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/357265c532428e886a643e8e653eec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0c66681d6c0166182c11ed7a9019026.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/357265c532428e886a643e8e653eec9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
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【推荐2】已知四边形
是平行四边形,在
中,点E、F是动点,
.
交
于点G,连接
,若
,
,求点E到
的距离;
(2)如图2,当点F在
延长线上时,将
绕着点A逆时针旋转得到
,使点
落在
边上,点
在平行四边形
的内部,过点C作
,连接
、
,若
,
,求证:
;
(3)如图3,
,点F从B点出发沿射线
运动,求运动过程中
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9862bcad331bb7c14678adc7d4e20fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6912f611b731582d82b1b167726797c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60634341a9603e24b2bbc6960abe3d31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)如图2,当点F在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78facf4ec7b1186f0dc9d0171566ac83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e55590555905eb4f57889bbd16e39a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b1a5427d8ff23df0f3ec194756c84c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd0cc007b162763042a0dca0174080.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6655e2fa64a32cd12fe0279afd65d73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e4fa04825ac7d071968056322d88be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc86abf8b9f75417b816b610c254afc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c50661719eaf38d54c088372c780a6c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5af599de932d188f45b6beb25050772f.png)
(3)如图3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54fb42922e3c9fe60e686ab53f615373.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e3d2c396269d19cca6b62e27ccb186c.png)
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【推荐3】定义:若一个圆内接四边形的两条对角线互相垂直,则称这个四边形为圆美四边形.
![](https://img.xkw.com/dksih/QBM/2022/4/1/2955705823477760/2982025809362944/STEM/36d89c29-2a92-4636-b963-8b26373eb93d.png?resizew=358)
(1)请在特殊四边形中找出一个圆美四边形,该四边形的名称是 ;
(2)如图1,在等腰Rt△ABC中,∠BAC=90°,经过点A、B的⊙O交AC边于点D,交BC于点E,连接DE,若四边形ABED为圆美四边形,则
的值是
(3)如图2,在△ABC中,经过点A、B的⊙O交AC边于点D,交BC于点E,连接AE、BD交于点F,若在四边形ABED的内部存在一点P,使得∠PBC=∠ADP=α,连接PE交BD于点G,连接PA,若PA⊥PD,PB⊥PE.
①试说明:四边形ABED为圆美四边形;
②若
,
,
,求DE的最小值.
![](https://img.xkw.com/dksih/QBM/2022/4/1/2955705823477760/2982025809362944/STEM/36d89c29-2a92-4636-b963-8b26373eb93d.png?resizew=358)
(1)请在特殊四边形中找出一个圆美四边形,该四边形的名称是 ;
(2)如图1,在等腰Rt△ABC中,∠BAC=90°,经过点A、B的⊙O交AC边于点D,交BC于点E,连接DE,若四边形ABED为圆美四边形,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b53dda09843bab8e3a5c8671752be0.png)
(3)如图2,在△ABC中,经过点A、B的⊙O交AC边于点D,交BC于点E,连接AE、BD交于点F,若在四边形ABED的内部存在一点P,使得∠PBC=∠ADP=α,连接PE交BD于点G,连接PA,若PA⊥PD,PB⊥PE.
①试说明:四边形ABED为圆美四边形;
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/874bc8ac1ba02e54bcc5691478b28dd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/584459b560841488d9a6d4bcf4cd2db1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc568277ff4d2df97ffa741980deedd5.png)
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【推荐1】已知,在梯形
中,
,
,
,
,点E是边
上的一个动点,点F是边
上的一个动点,线段
与线段
交于点G,且
,设
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/4dc3cdc9-43e3-47ee-b564-5ef019f52879.png?resizew=198)
(1)求y与x之间的函数解析式,并写出自变量的取值范围;
(2)当
平分
时,求
的值;
(3)分别延长
、
相交于点P,当
是等腰三角形时,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4adf90a8c2b29334cdc5aa5b554991f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46e096f87473d0b6b6d531ba22e5a7c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07140f277a35733d8c97577ccdd4e3ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6cbb2b1eb8e4e2275c87d5c4379be6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1dd8809233c90f66563c34f2164415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10b9f48b80427d1ec649873cb6aac731.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/15/4dc3cdc9-43e3-47ee-b564-5ef019f52879.png?resizew=198)
(1)求y与x之间的函数解析式,并写出自变量的取值范围;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041df224a926bb459f15ee4c29626697.png)
(3)分别延长
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a477603f3f88c3b48352b6130f9ad5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca306f77399ead5de92bd922dade326b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
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【推荐2】已知,射线BC绕着点B逆时针旋转得到射线BP,设旋转角为α且30°≤α≤60°,点A为射线BP上一点,AB=AC,点M为线段AB上一动点,D在射线BC所在直线上,且MD=MC,将△BCM沿BP所在直线翻折得到△BEM,连接DE:
![](https://img.xkw.com/dksih/QBM/2022/5/9/2975841816510464/2977079169417216/STEM/668f35270f0f470f8f663f5e8d84623d.png?resizew=549)
(1)如图1,当∠EMD=90°时,
①判断EB与CD的位置关系 ;②
;
(2)求
(用含α的式子表示);
(3)连接CE交BP于Q,若BC=4,请猜想DQ的取值范围,并直接写出答案.
![](https://img.xkw.com/dksih/QBM/2022/5/9/2975841816510464/2977079169417216/STEM/668f35270f0f470f8f663f5e8d84623d.png?resizew=549)
(1)如图1,当∠EMD=90°时,
①判断EB与CD的位置关系 ;②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55edf5660351d4d1e747fdb40b643e7d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee6fd344cbb59d3c5c515ed38a3febb1.png)
(3)连接CE交BP于Q,若BC=4,请猜想DQ的取值范围,并直接写出答案.
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【推荐1】抛物线G:
与
轴交于A、B两点,与
交于C(0,-1),且AB =4OC.
(1)直接写出抛物线G的解析式: ;
(2)如图1,点D(-1,m)在抛物线G上,点P是抛物线G上一个动点,且在直线OD的下方,过点P作
轴的平行线交直线OD于点Q,当线段PQ取最大值时,求点P的坐标;
(3)如图2,点M在
轴左侧的抛物线G上,将点M先向右平移4个单位后再向下平移,使得到的对应点N也落在
轴左侧的抛物线G上,若S△CMN=2,求点M的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3666050060fb25232784bb8ed3545ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(1)直接写出抛物线G的解析式: ;
(2)如图1,点D(-1,m)在抛物线G上,点P是抛物线G上一个动点,且在直线OD的下方,过点P作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(3)如图2,点M在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/27/b3423deb-d3fb-4e91-a69c-793b7fb5523d.png?resizew=600)
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【推荐2】如图,在平面直角坐标系中,抛物线
与
轴交于
,
两点(点
在点
的右侧),与
轴交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/4cac88de-cdf6-4c8b-84cc-f154185357cc.png?resizew=433)
(1)求抛物线的表达式;
(2)如图1,连接
,点
为直线
上方抛物线上(不与
、
重合)的一动点,过点
作
轴交
轴于点
,交
于点
,过点
作
,垂足为点
,求
的最大值及此时点
的坐标;
(3)如图2,将原抛物线绕线段
的中点
旋转180°得到新抛物线
,点
为新抛物线
上一点,在
轴上是否存在一点
,使得以点
、
、
、
为顶点的四边形是以
为边的平行四边形,若存在,请直接写出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c9800e4b992044d16681e77ff6563c.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/ee07d86765c4fb74ac647742f16bd57c.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/b5558ffa6dc28d437c0467c7f361d444.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/4cac88de-cdf6-4c8b-84cc-f154185357cc.png?resizew=433)
(1)求抛物线的表达式;
(2)如图1,连接
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b749baee563b6fd88196c75d29fc9797.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c65334978b0519b379910dfc4acf8344.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d549f53276e07452d675b0c089e9c6f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)如图2,将原抛物线绕线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4d2174f411d9db6ab7b2aea47818cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b4d2174f411d9db6ab7b2aea47818cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/f53330c107f8245290a5a42c3d356acd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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