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设f(x)=x3-x,过下列点分别作曲线f(x)的切线,其中存在三条直线与曲线y=f(x)相切的点是 .
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高二下学期数学《》真题及答案
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设函数fx=x+ax2+blnx曲线y=fx过P10且在P点处的切线斜率为2.1求ab的值2证明fx
如图所示过点A.64作曲线fx=的切线l.1求切线l的方程2求切线lx轴及曲线fx=所围成的封闭图形
已知函数fx=lnx﹣ax﹣1.1求函数fx的极值2当a≠0时过原点分别作曲线y=fx与y=ex的切
已知fx=x过点
(1, m)(m≠-2)可作曲线y= f(x)的三条切线,则m的取值范围是A.(-1,1)
(-2,3)
(-1,2)
(-3,-2)
已知函数fx=x3﹣12x+16过点P20作曲线y=fx的切线求切线的方程.
已知fx=x3-3x过点
(1,m) (m≠-2)可作曲线y=f(x)的三条切线,则实数m的取值范围是( ) A.(-1,1)
(-2,3)
(-1,2)
(-3,-2)
设fx=x3-x过下列点分别作曲线fx的切线其中存在三条直线与曲线y=fx相切的点是.
已知曲线fx=x3-3x过点A.016作曲线fx的切线求曲线的切线方程.
设函数fx=z+ax2+blnx曲线y=fx过P10且在P点处的切线斜率为2 证明fx≤2x
函数fx=x3﹣3x过点A016作曲线y=fx的切线则此切线方程为.
设函数fx在点x=1的某邻域内有定义且满足3x≤fx≤x2+x+1则曲线y=fx在点x=1处的切线方
设函数fx=z+ax2+blnx曲线y=fx过P10且在P点处的切线斜率为2证明fx≤2x-2
设函数fx=x+ax2+blnx曲线y=fx过点P.10且在P.点处的切线斜率为2.1求ab的值2设
设函数fx=x2+ax-lnx.1若a=1试求函数fx的单调区间.2过坐标原点O.作曲线y=fx的切
已知函数fx=x+t>0和点P10过点P.作曲线y=fx的两条切线PMPN切点分别为Mx1y1Nx2
已知函数fx=ax3+bx2﹣3x在x=±1处取得极值.Ⅰ求ab的值Ⅱ过点A.22作曲线y=fx的切
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Itisessentialtolearnhowtocommunicatewithpeoplefromotherculturesinordertobuildgoodrelationswiththem. 1 Alittleknowledgecangoalongway.Ifyouhavetimebeforemeetingwithsomeonefromanotherculturetrytotaketimetolearnthebasicdosanddon'tsofthatculture.Youcanfindinformationonthisfrominternetsources. Berespectfulandtolerant Eachculturehasitsownsetofdominantvalues主导价值观beliefsandprejudices.Youshouldn'tjudgepeoplebasedonthesedifferences.2Youmayevenlearnsomethingnew. Speakclearlyandslowlyifnecessary. Donotshoutortreatothersasthoughtheydonotunderstand.Raisingyourvoicedoesnotmakeyoueasiertounderstand.3Communicationdifficultiesarisefromdifferencesnotbecauseofmattersofintelligence. Avoidslangunlessyouareabsolutelysure. 4What'sworseitmayberegardedasveryoffensive.Itisbesttoavoidthemaltogetherunlessyouareabsolutelysureyouknowhowtousethemproperly. Understandrulesregardingtouching. Someculturesmayexpectmorephysicalcontactbetweenpeoplewhencommunicatingthanotherculturesdo.5Don'ttakeitasoffensiveifanothercultureismoreorlessphysicalthanyouareusedto.Ifyouareuncomfortableletothersknow. A.Usingnon﹣standardlanguageimproperlycanmakeyouhardtounderstand. B.Insteadrespectthemforwhattheyareandtoleratethem. C.Itiscommonfordifferentculturestousefacialexpressionsdifferently. D.Learnabouttheculturebeforehand. E.Forexamplesomeculturesmayshakeortouchhandsmorewillinglythanothers. F.Thisisbecausecertainposturescanbeseenasoffensivetoothers. G.Donottreatotherpeopleasthoughtheyareunintelligent.
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我国已成为世界上高铁发展最快技术最先进的国家之一.在节能技术上高铁动车组采用了再生制动方式动车到站前先停止供电由于动车会继续向前运行电机线圈随车轮转动并在磁场中切割磁感线产生将能转化为电能自动输入电网.
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TheIsleofSkyeisagreatdestinationforwildlifewatchers.Listedbelowaresomeofthebirdstobeseenwhilevisitingtheisland.Ifyouarekeentoseeasmuchaspossibleduringyourstayitwouldbeworthjoiningawildlifetour. SeaEagle Thewhite﹣tailedeaglecommonlyknownastheSeaEagleisthelargestbirdofpreyinBritainandisonlyfoundonthewestcoastofScotland. Theadultseaeaglehasawingspanof8﹣footandeatsfishrabbitsandothersmallbirds.Thebirdsdiedoutbecausetheywerecaughtandkilledbyfarmers.In1975theSeaEaglewerereintroducedtotheIsleofRumfromNorway.SincethentherareEagleshavegonefromstrengthtostrengthnowwithhundredsofbirdsaroundwestcoastofScotland. Gannet ThegannetisthelargestseabirdinScotlandwithanadultbirdhavingaswingspanofupto6﹣foot.Gannetsarefamousforthewaytheycatchfish.Whentheyspotaschooloffishfromtheairtheyfoldtheirwingsbackanddiveintothewaterathighspeed.Thisisdramatictowatch. Puffin Thepuffinisasmallseabirdthatismadefamousbyitsparrot﹣likemouth.Theyareadivingbirdandanimpressiveswimmerwhenhuntingfish. GoldenEagle Agoldeneagleisnearthetopofanybirdwatcherslist.TheIsleofSkyeisagreatplacetoseetheminthewild.Withaswingspanofupto8﹣foottheyareoneofthelargestbirdsofpreyinBritain.Theirdietincludesmicerabbitsandfishandannoyinglyforthelocalfarmersastheyhavebeenknowntotakewholelambs! 1Howdowildlifewatchersfeelwhenwatchingthegannetcatchfish? A.Verycurious. B.Veryfrightened. C.Veryexcited. D.Veryannoyed. 2Whosedietdothelocalfarmershate? A.Aseaeagle's. B.Agannet's. C.Apuffin's. D.Agoldeneagle's. 3Whatdothefourbirdshaveincommon? A.Theyareallrarebirds. B.Theyalleatfish. C.Theyarealldivingbirds. D.Theyallhavelargeswingspans.
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