2022·全国·模拟预测
名校
解题方法
1 . 已知点
,
,
,抛物线
.过点
的直线
与
交于
,
两点,直线
分别与
交于另一点
,则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dbbb76c7a42b124d474b652abdbadde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d6f5adf13b4214666292dd64b947741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af405a054bfe7fb7ce40e48d816467e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5671fb25040a712a49e8c8148d67d300.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
A.![]() |
B.直线![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2022-12-05更新
|
2282次组卷
|
6卷引用:模块六 平面解析几何-3
(已下线)模块六 平面解析几何-3(已下线)2023年普通高等学校招生全国统一考试数学领航卷(七)江苏省苏州市2023届高三上学期12月高考模拟数学试题山东省2023届高考考向核心卷数学试题新疆维吾尔自治区乌鲁木齐市第八十中学2024届高三上学期11月月考数学试题河北省秦皇岛市青龙满族自治县实验中学2022-2023学年高二上学期期末数学试题
名校
解题方法
2 . 已知抛物线
的焦点为
,
在抛物线上,延长
交抛物线于点
,抛物线准线与
轴交于点
,则下列叙述正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42102c1c07562853219ca5918803a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c16d7af5da5979ab880c417f0390f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
A.![]() |
B.点![]() ![]() |
C.![]() |
D.在![]() ![]() ![]() |
您最近一年使用:0次
2022-10-29更新
|
709次组卷
|
5卷引用:专题07 平面向量(3大易错点分析+解题模板+举一反三+易错题通关)
(已下线)专题07 平面向量(3大易错点分析+解题模板+举一反三+易错题通关)(已下线)信息必刷卷05(江苏专用,2024新题型)湖南省郴州市2022-2023学年高三上学期第一次教学质量监测数学试题黑龙江省哈尔滨市阿城区第一中学2022-2023学年高二上学期第二次月考数学试题3.3.2 抛物线的简单几何性质(同步练习提高篇)
名校
解题方法
3 . 在平面直角坐标系xOy中,抛物线
.
,
为C上两点,且
,
分别在第一、四象限.直线
与x正半轴交于
,与y负半轴交于
.
(1)若
,求
横坐标的取值范围;
(2)记
的重心为G,直线
,
的斜率分别为
,
,且
.若
,证明:λ为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa2c731aaa4005382d5b4324e29fbb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473913c0887bb64d386f4c02f1853452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e47cd514b2920609e3781c87df6ab70.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65939cf088d8c68a40575c7b8b7599bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04b56e44e4f0424a2b7a45567120a2e4.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0507fb626aa715e783551b4b3c3bea64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473913c0887bb64d386f4c02f1853452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/948be0f24a49534e473158761de1ee39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c3071b3b063a35df2196580f20315ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67a0c1e3ae17d6bdf98b9ca7c2798f30.png)
您最近一年使用:0次
2022-10-05更新
|
630次组卷
|
3卷引用:专题32 一类与斜率和、差、商、积问题的探究-2
4 . 已知点
为抛物线
的焦点,直线
过点
交抛物线
于
,
两点,
.设
为坐标原点,
,直线
与
轴分别交于
两点,则以下选项正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf92a1ba410263d4f68b7e0432b19aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de31b28cca69406158a9e597e240bea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7045301d623f040ceb5ea0a8be3772bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83ae15116ec544e1cbb8e54fcb606e84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b772a2ddcb32c849d45b7acb692a5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82626244a1dd45dc8945995c2730b15b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
A.![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() |
D.![]() |
您最近一年使用:0次
2022-06-11更新
|
1404次组卷
|
11卷引用:第五篇 向量与几何 专题10 圆锥曲线中的四点共圆问题 微点3 圆锥曲线中的四点共圆问题综合训练
(已下线)第五篇 向量与几何 专题10 圆锥曲线中的四点共圆问题 微点3 圆锥曲线中的四点共圆问题综合训练广东省深圳市光明区高级中学等2022届高三下学期名校联考数学试题江苏省盐城中学2022-2023学年高三上学期开学质量检测数学试题(已下线)第3章 圆锥曲线的方程(基础、典型、易错、新文化、压轴)(3)(已下线)模块二 专题3《圆锥曲线的方程》单元检测篇 B提升卷 (人教A)安徽省池州市第一中学2024届高三上学期“七省联考” 数学模拟练习(2)云南省昆明市第二十四中学2021~2022学年高二下学期期末统考数学模拟试题(已下线)第3章 圆锥曲线与方程(A卷·知识通关练)(3)广东省广州市协和学校2022-2023学年高二上学期11月月考数学试题(已下线)期中押题预测卷(考试范围:第1-3章)(拔高卷)-【单元测试】2022-2023学年高二数学分层训练AB卷(苏教版2019选择性必修第一册)3.3.2 抛物线的简单几何性质(同步练习提高篇)
名校
解题方法
5 . 在平面直角坐标系xOy中,过点
的直线l与抛物线C:
交于A,B两点,点
为线段AB的中点,且
,则下列结论正确的为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99296bab1b42898e7ca336a822510258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d73c0f68d721ebd050c16e6cb776be42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b31cba604de789a396135e56270d837.png)
A.N为![]() | B.M可以为C的焦点 |
C.l的斜率为![]() | D.![]() |
您最近一年使用:0次
解题方法
6 . 如图所示,曲线
,曲线
,过点
作直线交曲线
于点A,交曲线
于点B,若点C在曲线
的准线上.
![](https://img.xkw.com/dksih/QBM/2022/5/24/2986381346414592/2986469922283520/STEM/7e59e280-f6d2-49cf-99bc-b1ffcb9aa9e9.png?resizew=138)
(1)求
;
(2)若存在直线使点B为
中点,求A点横坐标(用p表示)及
斜率的范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/617ffe04ebe8be6e6a60b0284efbe91d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa064dbdaf8490286f9efc0eaca84ff1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b532b51e584020507d40c057c0527023.png)
![](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/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://img.xkw.com/dksih/QBM/2022/5/24/2986381346414592/2986469922283520/STEM/7e59e280-f6d2-49cf-99bc-b1ffcb9aa9e9.png?resizew=138)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8be646cd52d7f2f1714e7542e75810f2.png)
(2)若存在直线使点B为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
2022-05-24更新
|
1853次组卷
|
6卷引用:专题23 圆锥曲线中的最值、范围问题 微点2 圆锥曲线中的范围问题
(已下线)专题23 圆锥曲线中的最值、范围问题 微点2 圆锥曲线中的范围问题(已下线)考点18 解析几何中的范围、最值问题 2024届高考数学考点总动员浙江省新高考名校交流2022届高三下学期5月模拟卷(二)数学试题圆锥曲线之间的综合问题(已下线)第13讲 抛物线(9大考点)(2)(已下线)专题3-6 抛物线综合大题归类(讲+练)-【巅峰课堂】2023-2024学年高二数学热点题型归纳与培优练(人教A版2019选择性必修第一册)
解题方法
7 . 在平面直角坐标系xOy中,直线y=kx+4交抛物线C:x2=4y于A,B两点,交y轴于点Q,过点A,B分别作抛物线C的两条切线相交于点M,则以下结论:①∠AOB= 90°;②若直线MQ的斜率为k0,有kk0=
;③点M的纵坐标为
;④∠AMB=90°.其中正确的序号是______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bf3d3564c61e5e9c39a9e2cf2de048b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edbd40e04e2a943051fa83d6e511add.png)
您最近一年使用:0次
2022-05-22更新
|
405次组卷
|
3卷引用:第七节 抛物线 第二课时 直线与抛物线的位置关系 讲
(已下线)第七节 抛物线 第二课时 直线与抛物线的位置关系 讲2022届普通高等学校全国统一模拟招生考试(新未来5月联考)文科数学试卷(全国乙卷)河南省名校联盟2022届高三下学期5月数学模拟文科试题
解题方法
8 . 如图,点P为抛物线
与椭圆
在第一象限的交点,过抛物线焦点F且斜率不为0的直线l与抛物线交于A,B两点,连接
交椭圆E于点C,连接
交椭圆E于点D,记直线
的斜率分别为
.
![](https://img.xkw.com/dksih/QBM/2022/5/9/2975585339154432/2975638184673280/STEM/7a690488-bc17-4603-8292-82fe56327575.png?resizew=188)
(1)求点P的坐标并确定当
为常数时
的值;
(2)求
取最大值时直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7ad3432ac96b0a38beaa7f2edc3499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aff63bffc106e06fd2629a3d35c637f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://img.xkw.com/dksih/QBM/2022/5/9/2975585339154432/2975638184673280/STEM/7a690488-bc17-4603-8292-82fe56327575.png?resizew=188)
(1)求点P的坐标并确定当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7080a21f305bebe61d5790d826041e6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f14b014b0be63514079243a914c7d20e.png)
您最近一年使用:0次
名校
9 . 已知抛物线
:
(
)的焦点
与圆
的圆心重合,过
的直线
与
交于
、
两点,对于下列命题:
①
;
②以
,
两点为切点引
的两条切线,两条切线交于一点
,
点必在
上;
③
的中垂线与
轴交于点
,则
;
④
为坐标原点,点
、
在
上且满足
(
,
均不与
重合)则
,
的中点轨迹方程:
.
以上说法中正确的有_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72583ae19ca43a687788658ffc1d6d85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7acff98078cdd32804d8f1c4efbe2ddd.png)
②以
![](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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bdb006accc0b1553206855b5adf7832.png)
④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc2abe13e2d4176f55f71677bbbb6eb4.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/1dde8112e8eb968fd042418dd632759e.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/b646e7630de8a801824a1c37bb7741ab.png)
以上说法中正确的有
您最近一年使用:0次
2022-04-26更新
|
423次组卷
|
3卷引用:秘籍09 双曲线-备战2022年高考数学抢分秘籍(全国通用)
解题方法
10 . 已知抛物线
,焦点为
,过
作动直线
交抛物线
于
两点
,过
作抛物线
的切线
,过
作直线
的平行直线
交
轴于
,设线段
的垂直平分线为
,直线
的倾斜角为
.已知当
时,
.
(1)求抛物线
的方程;
(2)证明:直线
过
轴上一定点,并求该定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ea1be9b9b6bb12afa7e1ce703d1603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4daf40bad1cc89311930cce356672354.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eb31cb079c66cb83d4ef0a3310f8662.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/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1f331c3d96c5812a620e326373747eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2913f8d730167b2bc9bbbbf809de4b1a.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
您最近一年使用:0次