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设双曲线的渐近线与抛物线y=x2+1相切,则该双曲线的离心率e等于( ).
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5.00分如果双曲线的渐近线与抛物线y=x2+1相切则该双曲线的离心率为.
已知抛物线的方程是双曲线的右焦点是抛物线的焦点离心率为2则双曲线的标准方程是______其渐近线方程
设双曲线a>0b>0的渐近线与抛物线y=x2+1相切则该双曲线的离心率等于
2
已知双曲线.a>0b>0的左顶点与抛物线y2=2px的焦点的距离为4且双曲线的一条渐近线与抛物线的准
设双曲线=1a>0b>0的渐近线与抛物线y=x2+1相切则该双曲线的离心率等于.
2
设双曲线的一条渐近线与抛物线y=x+1只有一个公共点则双曲线的离心率为.
设双曲线的渐近线与抛物线相切则该双曲线的离心率等于
已知双曲线.a>0b>0的左顶点与抛物线y2=2px的焦点的距离为4且双曲线的一条渐近线与抛物线的准
Ⅰ若双曲线方程为求此双曲线的离心率和渐近线方程Ⅱ抛物线的顶点在原点准线是求抛物线的标准方程和焦点坐标
如果双曲线的渐近线与抛物线相切则该双曲线的离心率为_________
设双曲线的渐近线与抛物线y=x2+1相切则该双曲线的离心率等于
2
已知双曲线的两条渐近线均和圆C.x-12+y2=相切且双曲线的右焦点为抛物线y2=4x的焦点则该双曲
已知双曲线E的实轴长为2且其渐近线与抛物线y=x2+1相切则双曲线E的标准方程为.
已知双曲线的顶点到渐近线的距离为2焦点到渐近线的距离为6则该双曲线的离心率为.
设双曲线的渐近线与抛物线y=x2+1相切则该双曲线的离心率等于
设双曲线的一条渐近线与抛物线只有一个公共点则双曲线的离心率等于.
已知双曲线C-=1a>0b>0的渐近线与圆Ex-52+y2=9相切那么双曲线C的离心率等于.
设双曲线 的渐近线与抛物线y=x2+1相切则该双曲线的离心率e等于 B.2
A
B
C
D
设双曲线a>0b>0的渐近线与抛物线y=x2+1相切则该双曲线的离心率等于
2
如果双曲线-=1的渐近线与抛物线y=x2+1相切则该双曲线的离心率为.
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Ifyouoftenfeeltiredandthedoctorcan’tfindanythingwrongwithyouyoumaybeinastateofSubhealth亚健康.Subhealthisastatebetweenhealthandillness.Mostofthesubhealthypeoplearemiddle-agedoneswhoareusuallystressedoutbecauseofworkandfamily.Andsomeofthemarestudentswhoarehavingexams.Ifyouaresubheahltyitisnotdifficultforyoutobecomewellsoon.Youshouldhavegoodlivinghabits.Forexampleyoushouldgetupearlyandgotobedearly.Andyoushouldexerciseregularly.Exercisingcankeepyouhealthy.Asformealsitisbettertoeatlesssaltandsugar.Vegetablesfruitandfishareimportanttoyourbody.Youshouldeatmoreofthem.Itisnotgoodtoeattoomuchatonemealbecauseitmaycauseunhealthychangesinthedigestivetract消化道.Andatlastabalanceddietisveryhelpfulinstayingawayfromsubhealth.Whatisthemainideaofthepassage
教师最基本的权利是______.
教育思想具体包括____________和______三个部分.
WhenDavewaseighteenheboughtasecondhandcarfor200sothathecouldtraveltoandfromworkmore1thanbybus.Itworkedquitewellforafewyearsbutthenitgotsooldanditwascostinghim2muchinrepairsthathedecidedthathehadbetter3it. Heaskedamonghisfriendstoseeifanyonewasparticularly4tobuyacheapcarbuttheyallknewthatitwasfallingtopiecesso5ofthemhadanydesiretobuyit.Dave’sfriendSamsawthathewas6whentheymetoneeveningandsaid"What’s7Dave" DavetoldhimandSamanswered"WellwhataboutadvertisingitinthepaperYoumay8moreforitthatwaythanthecostoftheadvertisement!"ThinkingthatSam’s9wassensibleheputanadvertisementinaneveningpaperwhichread"Forsale:smallcar10verylittlepetrolonlytwoowners.Bargainat50."Fortwodaysaftertheadvertisementfirstappearedtherewasno11.ButthenonSaturdayeveninghehadanenquiry.Amanrangupandsaidhewouldliketo12himaboutthecar."Allright"Davesaidfeelinghappy.Heaskedthemanwhetherteno’clockthenextmorningwouldbe13ornot."Fine"themansaid"andI’ll14mywife.Weintendtogoforarideinitto15it." ThenextmorningataquartertotenDaveparkedthecarinthesquareoutsidehisfrontdoor16towaitthereforthepeoplewhohad17hisadvertisement.EvenDavehadto18thatthecarreallylookedlikeawreck.Thensoonafterhehadgotthecarasclean19itcouldbeapolicecarstoppedjustbehindhimandapolicemangotout.HelookedatDave’scarandthensaid"Haveyoureportedthis20tousyetsir/ 17.
智力高者创造力必定高.
在教学史上先后出现的影响较大的教学组织形式有____________分组教学和道尔顿制等.
Iwouldalmostratherseeyoudead.BobertS.CassattaleadingbankerofPhiladelphiashoutedwhenhistwenty-year-oldeldestdaughterannouncedthatshewantedtobecomeanartist.Inthe19thcenturyplayingatdrawingorpaintingondisheswasallrightforayoungladybutseriousworkinartwasnot.Andwhentheyounglady’sfamilyrackedamongthebestofPhiladelphia’ssocialfamiliessuchanideacouldnotevenbeconsidered.ThatwashowMaryCassattborn1844beganherstruggleasanartist.Shedidnottremblebeforeherfather’sangersheopposedhimwithcourageandatlastmadehimchangehismind.MaryCassattgaveuphersocialpositionandallthoughtsofathousandandafamilywhichinthosetimeswasunthinkableforayounglady.IntheendafterlongyearsofhardworkandperseveranceshebecameAmerica’smostimportantwomanartistandtheinternationallyrecognizedleadingwomanpainterofthetime.WhatdoweknowaboutMaryCassatt’smarriage
先行组织者教学策略是一种的教学技术
教学工作的基本环节是备课上课______作业批改成绩考核四个环节组成.
Iwouldalmostratherseeyoudead.BobertS.CassattaleadingbankerofPhiladelphiashoutedwhenhistwenty-year-oldeldestdaughterannouncedthatshewantedtobecomeanartist.Inthe19thcenturyplayingatdrawingorpaintingondisheswasallrightforayoungladybutseriousworkinartwasnot.Andwhentheyounglady’sfamilyrackedamongthebestofPhiladelphia’ssocialfamiliessuchanideacouldnotevenbeconsidered.ThatwashowMaryCassattborn1844beganherstruggleasanartist.Shedidnottremblebeforeherfather’sangersheopposedhimwithcourageandatlastmadehimchangehismind.MaryCassattgaveuphersocialpositionandallthoughtsofathousandandafamilywhichinthosetimeswasunthinkableforayounglady.IntheendafterlongyearsofhardworkandperseveranceshebecameAmerica’smostimportantwomanartistandtheinternationallyrecognizedleadingwomanpainterofthetime.WhatinfactwasMrCassatt’smainreasoninopposinghisdaughter’swish
启发学生数学学习的关键有以下几个词________________________.
Achildwhohasoncebeenpleasedwithatalelikesasaruletohaveitretoldinalmostthesamewordsbutthisshouldnotleadparentstotreatprintedfairystoriesasformaltexts.Itisalwaysmuchbettertotellastorythanreaditoutofabookandifaparentcanproducewhatintheactualsituationofthetimeandthechildisanimprovementontheprintedtextsomuchthebetter. Achargemadeagainstfairytalesisthattheyharmthechildbyfrighteninghimormakinghimsadthinking.Toprovethelatteronewouldhavetoshowinacontrolledexperimentthatchildrenwhohavereadfairystoriesweremoreoftensorryforcrueltythanthosewhohadnot.AstofearsthereareIthinksomecasesofchildrenbeingdangerouslyterrifiedbysomefairystory.Oftenhoweverthisarisesfromthechildhavingheardthestoryonce.Familiaritywiththestorybyrepetitionturnsthepainoffearintothepleasureofafearfacedandmastered.Therearealsopeoplewhoobjecttofairystoriesonthegroundsthattheyarenotobjectivelytruethatgiantswitchestwo-headeddragonsmagiccarpetsetc.donotexist;andthatinsteadofbeingfondofthestrangesideinfairytalesthechildshouldbetaughttolearntherealitybystudyinghistory.IfindsuchpeopleImustsaysopeculiarthatIdonotknowhowtoarguewiththem.IftheircaseweresoundtheworldshouldbefullofmadmenattemptingtoflyfromNewYorktoPhiladelphiaonastickorcoveringatelephonewithkissesinthebeliefthatitwastheirbelovedgirl-friend.Nofairystoryeverdeclaredtobeadescriptionoftherealworldandnocleverchildhaseverbelievedthatitwas. Theauthorconsidersthatafairystoryismoreeffectivewhenitis.
Somespidershuntonthegroundothersbuildwebstotraptheirfoodbutthegrasswaterspidercatchesitspreybyrunningalongthesurfaceofthewater.Thisspecialwaterspiderlivesonthegrassybanksofstreamswheremosquitoesdamselfliesandotherinsectscometofeedandbreed.AlthoughitisoneofthelargestspidersinNewZealandithasanunusualability.Itdoesn’tdisturbthewaterasitwaitsforitsmealandthereisbarelyaripplewhenitskimsacrossthesurfaceatlightningspeedtocatchitsprey.Grasswaterspidersdealswiftlywithlargerinsectslikedamselfliesbypullingtheirheadsunderthewaterandholdingthemthereuntiltheydrown.Afteramealthegrasswaterspiderspendsuptohalfanhourgroomingitself.Itwipesitseighteyesbrushesitsantennaeandtakesspecialcaretocleanthehairsonitsbody.Itisthehairsthattraptinybubblesofairsothatthespidercanrundownabladeofgrassandstayunderwaterforuptoanhourwhenitisfrightened.Thehairsalsokeepthespiderdryevenunderwater.Itisonlywhenthefemalespideriscaringfortheyoungthatshedoesnothuntonthewater.Aftermatingsheproducesalargeeggsacwhichshecarriesaroundforfiveweeks.Oncetheeggsstarttohatchsheattachesthesactosomebladesofgrassorathistle.Shethentearsthesacopenandreleasesthetinyspidersintothenurseryweb.Thewriterdescribesthespecialspiderasspecialbecause______.
WhenDavewaseighteenheboughtasecondhandcarfor200sothathecouldtraveltoandfromworkmore1thanbybus.Itworkedquitewellforafewyearsbutthenitgotsooldanditwascostinghim2muchinrepairsthathedecidedthathehadbetter3it. Heaskedamonghisfriendstoseeifanyonewasparticularly4tobuyacheapcarbuttheyallknewthatitwasfallingtopiecesso5ofthemhadanydesiretobuyit.Dave’sfriendSamsawthathewas6whentheymetoneeveningandsaid"What’s7Dave" DavetoldhimandSamanswered"WellwhataboutadvertisingitinthepaperYoumay8moreforitthatwaythanthecostoftheadvertisement!"ThinkingthatSam’s9wassensibleheputanadvertisementinaneveningpaperwhichread"Forsale:smallcar10verylittlepetrolonlytwoowners.Bargainat50."Fortwodaysaftertheadvertisementfirstappearedtherewasno11.ButthenonSaturdayeveninghehadanenquiry.Amanrangupandsaidhewouldliketo12himaboutthecar."Allright"Davesaidfeelinghappy.Heaskedthemanwhetherteno’clockthenextmorningwouldbe13ornot."Fine"themansaid"andI’ll14mywife.Weintendtogoforarideinitto15it." ThenextmorningataquartertotenDaveparkedthecarinthesquareoutsidehisfrontdoor16towaitthereforthepeoplewhohad17hisadvertisement.EvenDavehadto18thatthecarreallylookedlikeawreck.Thensoonafterhehadgotthecarasclean19itcouldbeapolicecarstoppedjustbehindhimandapolicemangotout.HelookedatDave’scarandthensaid"Haveyoureportedthis20tousyetsir/ 19.
学生们通过在一起学习和玩耍而成了朋友
Achildwhohasoncebeenpleasedwithatalelikesasaruletohaveitretoldinalmostthesamewordsbutthisshouldnotleadparentstotreatprintedfairystoriesasformaltexts.Itisalwaysmuchbettertotellastorythanreaditoutofabookandifaparentcanproducewhatintheactualsituationofthetimeandthechildisanimprovementontheprintedtextsomuchthebetter. Achargemadeagainstfairytalesisthattheyharmthechildbyfrighteninghimormakinghimsadthinking.Toprovethelatteronewouldhavetoshowinacontrolledexperimentthatchildrenwhohavereadfairystoriesweremoreoftensorryforcrueltythanthosewhohadnot.AstofearsthereareIthinksomecasesofchildrenbeingdangerouslyterrifiedbysomefairystory.Oftenhoweverthisarisesfromthechildhavingheardthestoryonce.Familiaritywiththestorybyrepetitionturnsthepainoffearintothepleasureofafearfacedandmastered.Therearealsopeoplewhoobjecttofairystoriesonthegroundsthattheyarenotobjectivelytruethatgiantswitchestwo-headeddragonsmagiccarpetsetc.donotexist;andthatinsteadofbeingfondofthestrangesideinfairytalesthechildshouldbetaughttolearntherealitybystudyinghistory.IfindsuchpeopleImustsaysopeculiarthatIdonotknowhowtoarguewiththem.IftheircaseweresoundtheworldshouldbefullofmadmenattemptingtoflyfromNewYorktoPhiladelphiaonastickorcoveringatelephonewithkissesinthebeliefthatitwastheirbelovedgirl-friend.Nofairystoryeverdeclaredtobeadescriptionoftherealworldandnocleverchildhaseverbelievedthatitwas. Oneofthereasonswhysomepeoplearenotinfavoroffairytalesisthat.
设双曲线的渐近线与抛物线y=x2+1相切则该双曲线的离心率e等于 B.2
Somespidershuntonthegroundothersbuildwebstotraptheirfoodbutthegrasswaterspidercatchesitspreybyrunningalongthesurfaceofthewater.Thisspecialwaterspiderlivesonthegrassybanksofstreamswheremosquitoesdamselfliesandotherinsectscometofeedandbreed.AlthoughitisoneofthelargestspidersinNewZealandithasanunusualability.Itdoesn’tdisturbthewaterasitwaitsforitsmealandthereisbarelyaripplewhenitskimsacrossthesurfaceatlightningspeedtocatchitsprey.Grasswaterspidersdealswiftlywithlargerinsectslikedamselfliesbypullingtheirheadsunderthewaterandholdingthemthereuntiltheydrown.Afteramealthegrasswaterspiderspendsuptohalfanhourgroomingitself.Itwipesitseighteyesbrushesitsantennaeandtakesspecialcaretocleanthehairsonitsbody.Itisthehairsthattraptinybubblesofairsothatthespidercanrundownabladeofgrassandstayunderwaterforuptoanhourwhenitisfrightened.Thehairsalsokeepthespiderdryevenunderwater.Itisonlywhenthefemalespideriscaringfortheyoungthatshedoesnothuntonthewater.Aftermatingsheproducesalargeeggsacwhichshecarriesaroundforfiveweeks.Oncetheeggsstarttohatchsheattachesthesactosomebladesofgrassorathistle.Shethentearsthesacopenandreleasesthetinyspidersintothenurseryweb.Thepurposeofthepassageisto______.
WantaglanceofthefutureofhealthcareTakealookatthewaythevariousnetworksofpeopleaboutpatientcarearebeingconnectedtooneanotherandhowthisnewconnectivityisbeingexploitedtodelivermedicinetothepatient—nomatterwhereheorshemaybe.Onlinedoctorsofferingadvicebasedonnormalsymptomsarethemostobviousexample.Increasinglyhoweverremotediagnosiswillbebasedonrealphysiologicaldatafromtheactualpatient.AgroupfromtheUniversityofKentuckyhasshownthatbyusingpersonaldataassistanceplusamobilephoneitisperfectlypracticaltosendapatient’simportantsignsoverthetelephone.Withthiskindofequipmentthecryaskingwhethertherewasadoctorinthehousecouldwellbeathingofthepast.Othermedicaltechnologygroupsareworkingonapplyingtelemedicinetoruralcountrysidecare.Andatleastoneteamwantstousetelemedicineasatoolfordisasterneed—especiallyafterearthquakes.Onthewholethetrendistowardsprovidingglobalaccesstomedicaldataandexperts’opinions.Butthereisoneproblem.Bandwidthisthelimitingfactorforsendingcomplexmedicalpicturesaroundtheworld—CTphotosbeingoneofthebiggestbandwidthusers.Communicationsatellitesmaybeabletodealwiththeshort-termneedsduringdisasterssuchasearthquakesorwars.Butmedicineislookingtowardsboththesecond-generationInternetandthird-generationmobilephonesforthefutureofremotemedicalservice.Doctorshavemettodiscusscomputer-basedtoolsformedicaldiagnosistrainingandtelemedicine.Withthefallingpriceofbroadbandcommunicationsthenewtechnologiesshouldstartanewtimewhentelemedicineandthesharingofmedicalinformationexperts’opinionsanddiagnosisarecommon.Thebasisofremotediagnosiswillbe______.
函数fx=2cos2x+sin2x的最小值是.
Ifyouoftenfeeltiredandthedoctorcan’tfindanythingwrongwithyouyoumaybeinastateofSubhealth亚健康.Subhealthisastatebetweenhealthandillness.Mostofthesubhealthypeoplearemiddle-agedoneswhoareusuallystressedoutbecauseofworkandfamily.Andsomeofthemarestudentswhoarehavingexams.Ifyouaresubheahltyitisnotdifficultforyoutobecomewellsoon.Youshouldhavegoodlivinghabits.Forexampleyoushouldgetupearlyandgotobedearly.Andyoushouldexerciseregularly.Exercisingcankeepyouhealthy.Asformealsitisbettertoeatlesssaltandsugar.Vegetablesfruitandfishareimportanttoyourbody.Youshouldeatmoreofthem.Itisnotgoodtoeattoomuchatonemealbecauseitmaycauseunhealthychangesinthedigestivetract消化道.Andatlastabalanceddietisveryhelpfulinstayingawayfromsubhealth.Whatshouldyoudoifyouaresubhealthy
Ifyouoftenfeeltiredandthedoctorcan’tfindanythingwrongwithyouyoumaybeinastateofSubhealth亚健康.Subhealthisastatebetweenhealthandillness.Mostofthesubhealthypeoplearemiddle-agedoneswhoareusuallystressedoutbecauseofworkandfamily.Andsomeofthemarestudentswhoarehavingexams.Ifyouaresubheahltyitisnotdifficultforyoutobecomewellsoon.Youshouldhavegoodlivinghabits.Forexampleyoushouldgetupearlyandgotobedearly.Andyoushouldexerciseregularly.Exercisingcankeepyouhealthy.Asformealsitisbettertoeatlesssaltandsugar.Vegetablesfruitandfishareimportanttoyourbody.Youshouldeatmoreofthem.Itisnotgoodtoeattoomuchatonemealbecauseitmaycauseunhealthychangesinthedigestivetract消化道.Andatlastabalanceddietisveryhelpfulinstayingawayfromsubhealth.Howmayyoufeelifyou’resubhealthy
WantaglanceofthefutureofhealthcareTakealookatthewaythevariousnetworksofpeopleaboutpatientcarearebeingconnectedtooneanotherandhowthisnewconnectivityisbeingexploitedtodelivermedicinetothepatient—nomatterwhereheorshemaybe.Onlinedoctorsofferingadvicebasedonnormalsymptomsarethemostobviousexample.Increasinglyhoweverremotediagnosiswillbebasedonrealphysiologicaldatafromtheactualpatient.AgroupfromtheUniversityofKentuckyhasshownthatbyusingpersonaldataassistanceplusamobilephoneitisperfectlypracticaltosendapatient’simportantsignsoverthetelephone.Withthiskindofequipmentthecryaskingwhethertherewasadoctorinthehousecouldwellbeathingofthepast.Othermedicaltechnologygroupsareworkingonapplyingtelemedicinetoruralcountrysidecare.Andatleastoneteamwantstousetelemedicineasatoolfordisasterneed—especiallyafterearthquakes.Onthewholethetrendistowardsprovidingglobalaccesstomedicaldataandexperts’opinions.Butthereisoneproblem.Bandwidthisthelimitingfactorforsendingcomplexmedicalpicturesaroundtheworld—CTphotosbeingoneofthebiggestbandwidthusers.Communicationsatellitesmaybeabletodealwiththeshort-termneedsduringdisasterssuchasearthquakesorwars.Butmedicineislookingtowardsboththesecond-generationInternetandthird-generationmobilephonesforthefutureofremotemedicalservice.Doctorshavemettodiscusscomputer-basedtoolsformedicaldiagnosistrainingandtelemedicine.Withthefallingpriceofbroadbandcommunicationsthenewtechnologiesshouldstartanewtimewhentelemedicineandthesharingofmedicalinformationexperts’opinionsanddiagnosisarecommon.Theprobleminthefourthparagraphreferstothefactthat______.
双曲线的准线方程是.
Achildwhohasoncebeenpleasedwithatalelikesasaruletohaveitretoldinalmostthesamewordsbutthisshouldnotleadparentstotreatprintedfairystoriesasformaltexts.Itisalwaysmuchbettertotellastorythanreaditoutofabookandifaparentcanproducewhatintheactualsituationofthetimeandthechildisanimprovementontheprintedtextsomuchthebetter. Achargemadeagainstfairytalesisthattheyharmthechildbyfrighteninghimormakinghimsadthinking.Toprovethelatteronewouldhavetoshowinacontrolledexperimentthatchildrenwhohavereadfairystoriesweremoreoftensorryforcrueltythanthosewhohadnot.AstofearsthereareIthinksomecasesofchildrenbeingdangerouslyterrifiedbysomefairystory.Oftenhoweverthisarisesfromthechildhavingheardthestoryonce.Familiaritywiththestorybyrepetitionturnsthepainoffearintothepleasureofafearfacedandmastered.Therearealsopeoplewhoobjecttofairystoriesonthegroundsthattheyarenotobjectivelytruethatgiantswitchestwo-headeddragonsmagiccarpetsetc.donotexist;andthatinsteadofbeingfondofthestrangesideinfairytalesthechildshouldbetaughttolearntherealitybystudyinghistory.IfindsuchpeopleImustsaysopeculiarthatIdonotknowhowtoarguewiththem.IftheircaseweresoundtheworldshouldbefullofmadmenattemptingtoflyfromNewYorktoPhiladelphiaonastickorcoveringatelephonewithkissesinthebeliefthatitwastheirbelovedgirl-friend.Nofairystoryeverdeclaredtobeadescriptionoftherealworldandnocleverchildhaseverbelievedthatitwas. Theadvantageclaimedforrepeatingfairystoriestoyoungchildrenisthatit.
那本告诉我很多有趣的事的书是用英语写的
若将函数x>0的图像向右平移个单位长度后与函数y=tanwx的图像重合则w的最小值为.
[提示]1不少学生可能抽烟学生中抽烟的人数还在增多 2一份调查报告透露某校有五分之二以上的学生抽烟有些学生甚至偷了钱买烟 3对中学生来说抽烟的危害比成年人更大抽烟不仅有害于身体还有害于思想 4中学生是国家未来的建设者抽烟的学生该下决心戒烟了 请根据上面的提示写一篇题为GiveUpSmoking的短文字数约120字
数学课程设计要满足学生______的需要使学生掌握必需的数学______和______发展学生的抽象思维和推理能力.
设函数若fa=2则实数a=.
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