首页
试卷库
试题库
当前位置：
X题卡
>
所有题目
>
题目详情
设F1和F2为双曲线﹣y2＝1的两个焦点，点P在双曲线上且满足∠F1PF2＝90°，则△F1PF2的面积是（ ）
查看本题答案
包含此试题的试卷
高三上学期数学《》真题及答案
点击查看
你可能感兴趣的试题
已知F1F2是双曲线的两个焦点Q.是双曲线上任意一点从某一焦点引∠F1QF2平分线的垂线垂足为P则点
直线
圆
椭圆
双曲线
已知双曲线x2-y2=1点F1F2为其两个焦点点P.为双曲线上一点若PF1⊥PF2则PF1+PF2=
设F1F2是双曲线x2－＝1的两个焦点P.是双曲线上的一点且3PF1＝4PF2则△PF1F2的面积等
已知双曲线的方程是16x2－9y2＝144.1求双曲线的焦点坐标离心率和渐近线方程2设F.1和F.2
F1F2是双曲线－＝1的两个焦点P.在双曲线上且满足|PF1|·|PF2|＝32则∠F1PF2＝__
设F.1F.2是双曲线－y2＝1的两个焦点P.在双曲线上当△F.1PF2的面积为2时的值为.
设F1F2是双曲线－y2＝1的两个焦点点P.在双曲线上且＝0则|PF1|·|PF2|＝_______
双曲线a＞0b＞0的两个焦点为F1F2若点P为其上一点且|PF1|=2|PF2|则双曲线离心率e的取
e
1＜e＜3
e
1＜e≤3
e
e＞3
e
e≥3
已知双曲线-=1a>0b>0的两个焦点为F.1F20点P.是第一象限内双曲线上的点且tan∠PF1F
已知双曲线x2－y2＝1点F.1F.2为其两个焦点点P.为双曲线上一点若PF1⊥PF2则|PF1|＋
设F.1F.2为双曲线的两个焦点点在双曲线上且满足∠F.1PF.2=则△F.1PF.2的面积为___
已知双曲线x2－y2＝1点F1F2为其两个焦点点P.为双曲线上一点若PF1⊥PF2则PF1＋PF2＝
已知双曲线x2-y2=1点F.1F.2为其两个焦点点P.为双曲线上一点若PF1⊥PF2则|PF1|+
设过双曲线x2-y2=9左焦点F.1的直线交双曲线的左支于点PQF2为双曲线的右焦点.若|PQ|=7
19
26
43
50
设双曲线的左右焦点分别为F1F2．若点P在双曲线上且△F1PF2为锐角三角形则|PF1|+|PF2
已知F.1F2是双曲线的两个焦点以线段F.1F2为边作正三角形MF1F2若边MF1的中点在此双曲线上
已知双曲线-=1b∈N*的左右两个焦点为F.1F.2P是双曲线上的一点且满足|PF1||PF2|=|
设双曲线-=1的左右焦点分别为F.1F2点P.为双曲线上位于第一象限内的一点且△PF1F2的面积为6
设F.1F.2是双曲线－y2＝1的两个焦点点P.在双曲线上∠F.1PF2＝90°则△F.1PF2的面
双曲线 b∈N+的焦点是F1F2P是双曲线上的一点满足|OP|＜5且|PF1||F1F2||PF2
热门试题
更多
1分IfirstmetLisathreeyearsagowhenweataradiostationtogether. A.haveworked B.hadbeenworking C.wereworking D.hadworked
2分好的身体状况基于健康的饮食习惯 Goodphysicalconditionisbasedonhealthy.
1分TomisfacingadifficultbetweenstayingwithhisfamilyandworkinginTibet.choose
1分Thejokewassofunnythatitmadehimagainandagain. A.laugh B.tolaugh C.laughed D.laughs
5分DavidHelloOfficeCentre. SusanHiisthatyouDavid?1? DavidFinethankyou.SusanI'msogladthatyouphoned.HowisyourstudyinLondon? SusanQuitewell.Andhowaboutyourteaching? DavidOK.Thestudentsareverygood.OhdidItellyouaboutmytriptoLondon? SusanYes2? DavidI'mleavingattwotomorrowafternoon. Susan3? DavidMyfightnumberisBC266 I'llgettotheairportatfour.Susancanyoupickmeupatheairport? Susan4.Ihavetobringmymotherhomefromhospitalatthattime. DavidIsee.It'sallright.Icanmanagetofindyourplacebymyself. SusanWellDavidI'llhavemyfriendTompickyouup. DavidOhit'sgood.ButIhaveneverseenhimbefore.Whatdoeshelooklike? SusanHelooksverystrongandtall.Wellhe'llcallyouwhenyouarrive.I'mlookingforwardtoseeingyou DavidThankyou. Susan5 1. 2. 3. 4. 5.
4分 IhavebeeninChinafornearlyayear.Asaforeignerit'shardformetellwhatChinesepeopleare1.ButmyexperienceinBeijingsaidsomething. AcoupleofweeksagoIwenttobuyfourbigsuitcases行李箱fortravel.Itsuddenlyrainedheavily2Iwasgoingdownthestreet.Astrangercalledmeintohislittleshop.Heofferedmeacupofteaandachair.Whentheraingot3Ithankedhimandrushedtoastorenearbytobuymysuitcases. Ifyou'veevertriedtopushfourbigsuitcasesbyyourselfyoumayunderstandmysituation.Ilookedsillyforthesuitcasesweredancingwildlyacrossthefloor.ThenIgotatouchontheshoulder.Itwastheseller.HesignedthatIshouldwait.Afewminuteslaterhedroveupinacarandputthesuitcases4.Thenwewentdrivinghappilyalongtheroadtomyhome.Iofferedhimsomemoneybutherefused.InbrokenEnglishhesaidFeelgood…helpyou. NowyoucanseeChinesepeoplearealwaysreadytohelpyou. 1. 2. 3. 4.
2分Doesyourbreakfast﹣roomgetawonderfulviewofthelakefromfourwindows?改为肯定句 breakfast﹣roomawonderfulviewofthelakefromfourwindows.
1分﹣HelloSally!CanIseeMr.Brown? ﹣.I'lltellhimyouarehere. A.Whatapity B.Justaminute C.Congratulations D.Nevermind
10分Post﹣00s零零后isadocumentaryaboutgrowingup.Itshowsthereallivesofchildrenwhowerebornbetween2000and2009.Theystrugglewithschoolwork.Theyfaceproblemsinrelationshipswithothers.Theydon'tknowwhattodoifayoungerbrotherorsisterisbornintothefamily.ButthisfiveepisodeserieswhichareairedonCCTV﹣9fromAug20isdifferentfromotherTVprogramsaboutgrowingup. Itwasfilmedover10years.Theshowmakersfollowedthegrowthosagroupofkidsfromkindergartentomiddleschool.Inotherwordseverythingintheseriesisreal.Suchstoriesknownascoming﹣of﹣age真实成长storieshaveaspecialattraction.Theyfeedourcuriosityforseeingsomeoneelse'slife.Webecomemoreandmoreinterestedinthecharactersasifwetrulyknowthem.Andwhileweenjoytherealstorieswealsofeelthehardshipofreality.Afterallthere'snoscript副本andthere'snoturningback﹣﹣thisisreallife. Youcanalsoseereallifeina2014filmBoyhood.ThefilmfollowsthelifeofMasonJrfor12yearsfromwhenhewas6tohissenioryearofhighschool. Whilecoming﹣of﹣agestoriesmaylookordinaryontheoutsidetheyoftenallowustolookthroughrealityandseesomethingamazing﹣﹣thepoweroflifeitself. AsUSwriterErnestHemmingwayoncewroteAnyman'slifetoldtrulyisanovel.AndwhenitcomestoPost﹣00it'salsoareallygooddocumentary. 1.ThedocumentaryPost﹣00sisaboutteenagerslife. 2.Wearecuriousaboutsomeoneelse'slife. 3.BoyhoodisaboutMasonJr'slifeaboyagedfrom6to19. 4.WecanseethepoweroflifeitselfwhenwewatchPost﹣00. 5.FromthepassagewecanknowthatthestoriesinPost﹣00maybemadeup.
1分Mygrandmaisinterestedintakingwithhermobilephone.photo
1分HappyNewYearChristina.Here'sagiftyou. A.in B.from C.for D.with
6分Apunctualpersonisinthehabitofdoingathingatthecorrecttimeandisneverlateforanything. Anunpunctualmanneverdoeswhathehastodoattherighttime.Heisalwaysinahurryandintheendlosesbothtimeandhisgoodname.Alostthingmaybefoundagainbutlosttimecanneverbegotback.Timeismoreusefulthanmaterialthings.Infacttimeislifeitself.Anunpunctualmanisalwayswastinghismostimportantthingsaswellasothers'.Anunpunctualpersonisalwayssayingunhappilythathefindsnotimetoanswerlettersorreturncalls.Butthemanwhoreallyhasmuchtodoisverycarefulofhistime.Heknowsthathecannotfinishallhisworkunlesshecarefullydoeseverypieceofwork. Beingunpunctualisthesignofdisrespect不尊重towardsothers.Ifapersonisinvitedtodinnerandarriveslaterthanthetimewhenheshouldbetherehekeepsalltheotherguests客人waitingforhim.Usuallythiswillbethoughtasagreatdisrespecttothehostandalltheotherguests. Notlikeapunctualpersonanunpunctualonecan'tdohisdutywonderfullywhetheritispublicorpersonal.Imaginehowitwouldbeifthosewhoshoulddoimportanttasksfailedtobeontime.Amanwhoisknowntobeoftenunpunctualisneverbelievedbyhisfriendsorfellowmen. 1.TheChinesemeaningofthewordpunctualinthispassageisprobably. A.听话的 B.守时的 C.守纪律的 D.能干的 2.WhichofthefollowingisTRUEaccordingtothepassage? A.Anunpunctualpersonoftenhasmoretime. B.Anunpunctualpersonhasmoreworktodo. C.Apunctualpersonoftenhasabusylife. D.Apunctualpersonoftendoeshisworkwonderfully. 3.Whenyouareinvitedtodinneryou'dbetterarrivethere. A.inahurry B.afterthehost C.atthedecidedtime D.beforeotherguests 4.Fromthepassagewelearnthatanunpunctualmanusuallyintheend. A.savestimeforothers B.leaveshisfamilyandfriends C.getshischancesandknowledge D.loseshistimeandgoodname.
1分Whichofthefollowingunderlinedpartsisdifferentinpronunciationfromtheothers? A.Let'srelaxourselvesforawhile. B.Canyoutellmeyouraddress? C.Gotothewebsitetogetpictures. D.Shallwehavesevenapples?
1分Aftertwohours'discussionthey最终reachedanagreement.
5分Ifyoucan'tstandupstandout!ThisisthesloganofanIrishcompanynamedIzzyWheels.ItwasfoundedbytwosistersAilbheandIszbelKeane.Theyhavewonthe2017AccentureleadersofTomorrowaward. Wheelchairsusuallylookalittleugly.Theyareneverseenasasymbolofpeople'spersonality.Butthetwogirlshavechangedthat. TheyoungestsisterIsabelwhowasbornwithaseriousillnessisparalyzed瘫痪fromherwaistdown.Idon'twantawheelchairwhichlookslikeacommonone.IwantmywheelchairtobesomethingfashionableandIwantittoshowmybrightandsunnypersonality.saidIsabel. Isabel'selderAilbheatalenteddesigneralsofoundthewheelchairdidn'tsuithersister'spersonalitysotheyworkedtogethertomakeitlookmorefashionablewithspecialwheelchaircovers. AilbherecentlydesignedspecialsilverandblackwheelchaircoversforIsabel'swheelchair.Shehascreated15setsofcoversintotalsothathersisterwillhaveachangeoffashionmoreoften. NowtheircompanyIzzyWheelssellsfashionablewheelchaircovers.Theyhavealreadychangedwheelchairusers'livesacrossthecountryIzzyWheelshasshowntotheworldthatawheelchaircanbeaworkofart. Iamnolongerseenasthepoorgirlinawheelchairbypassers﹣by.IamnowseenasafashionablepersonwithcoolwheelssaidIsabel. 1.WhatisAilbhe? Sheis. 2.WhyisIsabelparalyzed? Sheisparalyzedbecauseof. 3.WhydidAilbhewanttochangehersister'swheelchair? Becauseshethoughtthewheelchairdidn'tsuithersister'spersonality. 4.Howdothetwosisterschangethewheelusers'lives? Theymakeitby. 5.WhatdootherpeoplethinkofIsabelnow? Theythinksheisratherthanapoorgirlinawheelchair.
12分IwillneverforgettheSundayafternoonsIspentatmygrandfather'sfarminWesternPennsylvaniawhenIwasalittleboy.Milesofwindingstonewallsaroundthehouseprovidedendlesshoursof1foracitykidlikeme. IcanstillrememberoneafternoonwhenIwaseightyearsold.Sincemyfirstvisittothe2I'dwantedtobeallowedtoclimbthestonewallsaroundthefarm.Myparentswouldneverthinkitwasgood.Stillmywishtoclimbacrossthosewallsgrewso3.OnespringafternoonIpickedupallmycourageandenteredthelivingroomwheretheadultsweresittingandtalkingoverteaafterdinner. CanIclimbthestonewalls?Iasked.Immediatelythewomenintheroomcried.Heavensno!You'll4yourself!Iwasn'ttoodisappointedtheirreplywasjustasI'dexpected.ButbeforeIcouldleavetheroommygrandfatherstoppedme.Waitaminute.IheardhimsayLettheboyclimbthestonewalls.Hehasto5todothingsforhimself. Hurryuphesaidtomeandcomeandseemewhenyougetback.ForthenexttwoandahalfhoursIclimbedthoseoldwallsandhadthetimeofmylife.LaterImetwithmygrandfathertotellhimaboutmyadventure冒险.I'llneverforgetwhathesaid.Fredhesaidsmilingyoumadethisdaya6dayjustbybeingyourself.Alwaysrememberthere'sonlyonepersoninthiswholeworldlikeyouandIlikeyouexactlyasyouare. 1.A.sadness B.pity C.fun D.puzzle 2.A.farm B.house C.home D.room 3.A.weak B.high C.low D.strong 4.A.enjoy B.hurt C.forget D.lose 5.A.agree B.finish C.promise D.learn 6.A.terrible B.difficult C.special D.hopeless
1分In2022BeijingwillhosttheWinterOlympics.mybrotherandIwanttowatchit. A.Neither B.All C.Either D.Both
happyherbefriendssheifcomewill .
2分我的十二岁生日对我来说是一个精彩回忆 Mybirthdayisawonderfulmemoryforme.
1分﹣Whatwouldyouliketohaveforsupper? ﹣EithernoodlesorriceOK.Idon'tmind. A.are B.is C.were D.was
1分luckythewinnerofthegameshowis!Aeleven﹣daytripabroadforfree! A.How B.What C.Whata D.Whatan
1分Themanager'svoicesoundedonthephone.Heofferedtoshowusaroundthecompany. A.softly B.friendly C.gently D.seriously
1分Lisalearnsroadbywalkingtoandfromschoolalongwithherparents.safe
1分WhenyouarelearningEnglishuseityouwillloseit. A.but B.or C.then D.and
runningthetheyonkeptplaygroundon .
10分Alittleboythoughtofhimselfastheunluckiestchildintheworldbecausepoliomyelitis小儿麻痹madehimunabletowalklikenormalpeople.Hehardlyplayedwith1classmates.Notonlyhisclassmatesbuthisheadteacher2himasanunsociablechild.Whenhewasaskedtoanswerquestionsinclasshealwaysloweredhisheadwithout3word. Onespringtheboy'sfatherwantedtoplantsometreesinfrontofthehouse.Hetoldhischildrentoplantatreeeach.ThefathersaidWhoevergrowsthebesttreegetagift.Hisbrothersandsistersallwenttothebackyardtogetthetree4.Althoughtheboyalsowantedtogethisfather'sgift.hethoughtthetreeheplantedwoulddiesoon.Soheonlywatereditonceandnever5it. Afewdayslaterwhenthelittleboywenttoseehistreehewassurprisedtofindthatitgrewsomefreshleaves.Histreeappearedgreenerthanthetreesofhisbrothersanssisters.HisfatherkepthispromiseandboughtthelittleboyagiftandsaidtohimIbelieveyou6agreatbotanistwhenyougrowup. Sincethenthelittleboyslowlybecameoptimistic.Onenightthelittleboylayonthebedbut7sleep.Lookingatthebrightmoonlight8thewindowhesuddenlyrememberedtheteacheroncesaid.Plantsgenerallygrowatnight.Whynotgotoseethetree?Whenhecametothebackyardhefound9.AllofasuddenheunderstoodHowchildishhe10!Hisfatherwassecretlytakingcareofhissmalltreewithlove!Hereturnedtohisroomwithtearsinhiseyes. Yearspassedthelittleboydidn'tbecomeabotanistbuthebecamethePresidentofUnitedStates.HisnamewasFranklinRooseveltwithhisfather'sloveandencouragement. 1.A.him B.his C.he D.himself 2.A.regarded B.regards C.hadregarded D.hasregarded 3.A.an B.the C./ D.a 4.A.water B.watering C.watered D.waters 5.A.lookafter B.takecareof C.takecare D.lookedfor 6.A.willbecome B.become C.became D.havebecome 7.A.shouldn't B.needn't C.mightn't D.couldn't 8.A.inside B.outside C.upside D.downside 9.A.ifhisfatherhadwateredhistree B.whyhisfatherwouldwaterhistree C.thatthisfatherwaswateringhistree D.howisfatherwateredhistree 10.A.usedtobe B.usedtolike C.wasusedtodoing D.getusedtobe
2分Myfatherwenttoexerciseinthefitnesscentretwiceaweeklastyear.对划线部分提问 didyourfathergotoexerciseinthefitnesscentrelastyear?
2分Peoplewilldesignrobotstodomosthouseworkforhumaninthenearfuture.改为被动语态 Robotswilltodomosthouseworkforhumaninthenearfuture.
2分会议将于二月举办 Themeetingwillbeheld.
2分wanttowithfriendsintheirfreetimepeoplehavefun连词成句
热门题库
更多
高一下学期英语
教案备课库
高一上学期生物
高一下学期生物
高二上学期数学
高二上学期物理
高二上学期英语
高二上学期生物
高二下学期数学
高二上学期化学
高二下学期物理
高三下学期物理
高三上学期物理
高三上学期生物
高三上学期化学
高二下学期化学
湘公网安备 43130202000226号