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设圆x2+y2+2x﹣2=0截x轴和y轴所得的弦分别为AB和CD,则四边形ACBD的面积是( )
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高二下学期数学《》真题及答案
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圆心在直线x﹣2y=0上的圆C与y轴的正半轴相切圆C截x轴所得弦的长为2则圆C的标准方程为.
某圆与XY轴的交点分别为A07B10C70则圆的方程
x2+y2=25
x2(y-4)2=25
(x-4)2+y2=25
(x-4)2+(y-4)2=25
已知圆心在直线x﹣2y=0上的圆C与y轴的正半轴相切圆C截x轴所得弦的长为求圆C的标准方程.
已知圆M.过定点20且圆心M.在抛物线y2=4x上运动若y轴截圆M.所得弦为AB则弦长|AB|等于
4
3
2
与点M.位置有关的值
已知圆P.满足①截y轴所得弦长为2②被x轴分成两段圆弧其弧长的比为3∶1③圆心到直线lx-2y=0的
某圆与x.Y轴的交点分别为A07B10C70则圆的方程
x2+y2=25;
x2+(y-4)2=25:
(x-4)2+y2=25;
(x-4)2+(y-4)2=25。
设圆满足:①截y轴所得弦长为2;②被x轴分成两段圆弧其弧长的比为3:1在满足条件①②的所有圆中求圆心
求与x轴相切圆心C.在直线3x-y=0上且截直线x-y=0得的弦长为2的圆的方程
一圆在xy轴上分别截得弦长为14和4且圆心在直线2x+3y=0上求此圆方程.
求与x轴相切圆心在直线3x-y=0上且被直线x-y=0截得的弦长为2的圆的方程.
圆心在直线x﹣2y=0上的圆C与y轴的正半轴相切圆C截x轴所得弦的长为2则圆C的标准方程为.
设圆x2+y2+2x﹣2=0截x轴和y轴所得的弦分别为AB和CD则四边形ACBD的面积是
8
已知圆满足①截y轴所得弦长为2②被x轴分成两段圆弧其弧长的比为3∶1③圆心到直线lx-2y=0的距离
若直线2x﹣y﹣4=0在x轴和y轴上的截距分别为a和b则a﹣b的值为
6
2
﹣2
﹣6
已知动圆C.过定点M.02且在x轴上截得弦长为4.设该动圆圆心的轨迹为曲线C.1求曲线C.的方程2设
已知圆C.和y轴相切圆心在直线x-3y=0上且被直线y=x截得的弦长为2求圆C.的方程.
过原点且在x轴y轴上的截距分别为pqpq≠0的圆的方程是
x
2
+y
2
-px-qy=0
x
2
+y
2
+px-qy=0
x
2
+y
2
-px+qy=0
x
2
+y
2
+px+qy=0
线段AB的两个端点分别为2-321则线段AB
与x轴平行
与y轴平行
经过原点
与y轴相交
设圆x2+y2=1的一条切线与x轴y轴分别交于点A.B.则AB的最小值为______.
已知圆的方程为x2+y2﹣6x﹣8y=0设该圆过点35的最长弦和最短弦分别为AC和BD则四边形ABC
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NothingwasgoingrightforDr.Turneratthehospital.Hemadeamistakewhileoperatingonapatient.Hefeltsurehewasnolongertrustedanddecidedtochangehisjob.Onedayhelearnedfromthepaperthatadoctorwaslookingforapartner合作者.ThedoctorwhosenamewasJohnsonlivedinThorbyasmalltowninthenorthofEngland. AfewdayslaterDr.TurnerwenttoThorbyandarrivedatDr.Johnson'shomeearlyintheafternoon.ThougholdandalittledeafDr.Johnsonstillhadagoodbrain.Hekepttalkingtothevisitoraboutthetownanditspeople.Whentheyturnedtothequestionofpartnershipitwasalreadysevenintheevening.Dr.JohnsoninvitedDr.TurnertohavedinnerwithhiminarestaurantbeforecatchingthetrainbacktoLondon.Dr.TurnernoticedthatDr.Johnsonwasfondofgoodfoodandexpensivewines.Theyhadanexcellentmeal.WhenthebillwasbroughtDr.Johnsonfeltinhispocket.Ohdearhesaid.I'veforgottenmymoney.That'sallrightDr.Turnersaid.I'llpaythebill.AshedidsohebegantowonderwhetherDr.Johnsonwasworthyoftrust. 1Dr.Turnerdecidedtoleavehispresentjobbecause. A.hehadneverbeentrusted B.itdemandedtoogreatskills C.hebelieveditofferedlittlehopeforhisfuture D.hethoughtthehospitalwouldlikehimtoleave 2Thetwodoctorsspentmostoftheafternoontalkingabout. A.thingsofnointeresttoDr.Johnson B.thingsofnoimportancetoDr.Turner C.healthmatters D.foodanddrink 3Thestorysuggeststhat. A.Dr.JohnsondidnotlikeDr.Turner B.thetwodoctorswouldbecomefriends C.thetwodoctorswouldnotworktogether D.Dr.Turnerdecidedtostayathispresentjob 4Thewordsdidsointhelastsentencemean. A.caughtthetrainbacktoLondon B.feltinhispocket C.paidthebill D.saidthosewords
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