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如图,函数f(x)的图象为两条射线CA,CB组成的折线,如果不等式f(x)≥x2﹣x﹣a的解集中有且仅有1个整数,那么实数a的取值范围是( )
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高三上学期数学《》真题及答案
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已知函数fx=sinωx+φ-cosωx+φ其图象相邻的两条对称轴方程为x=0与x=则
f(x)的最小正周期为2π,且在(0,π)上为单调递增函数
f(x)的最小正周期为2π,且在(0,π)上为单调递减函数
f(x)的最小正周期为π,且在
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f(x)的最小正周期为π,且在
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函数y=fx的图象如图所示则y=fx的解析式是fx=________.
在同一平面直角坐标系中函数y=fx和y=gx的图象关于直线y=x对称现将y=gx的图象沿x轴向左平移
已知函数y=fx的图象由图中的两条射线和抛物线的一部分组成求函数的解析式.
如图1已知直线y=x+3与x轴交于点A.与y轴交于点B.将直线在x轴下方的部分沿x轴翻折得到一个新函
如图所示函数y=fx的图像由两条射线和三条线段组成.若∀x∈Rfx>fx-1则正实数a的取值范围为_
已知角φ的终边经过点P1-2函数fx=sinωx+φω>0图象的相邻两条对称轴之间的距离为则f=__
如图在平面直角坐标系xOy中我把由两条射线AEBF和以AB为直径的半圆所组成的图形叫作图形C.注不含
如图1已知直线y=x+3与x轴交于点A.与y轴交于点B.将直线在x轴下方的部分沿x轴翻折得到一个新函
函数fx=sinωx+ω>0的图象的相邻两条对称轴间的距离是.若将函数fx图象向右平移个单位得到函数
f(x)=sin(4x+
)
f(x)=sin(4x-
)
f(x)=sin(2x+
)
f(x)=sin2x
如图函数fx的图象为两条射线CACB组成的折线如果不等式fx≥x2﹣a的解集中有且仅有1个整数那么
{a|﹣2≤a<0}
{a|﹣2<a<0}
{a|0≤a<1}
{a|﹣2≤a<1}
已知函数 y = f x 的图象是由图中的两条射线和抛物线的一部分组成求函数的解析式.
函数fx=的图象的相邻两条对称轴之间的距离等于________.
如图函数y=fx的图象为折线ABC设gx=f[fx]则函数y=gx的图象为
二
如图函数y=的图象过点A.12.1求该函数的解析式2过点A.分别向x轴和y轴作垂线垂足为B.和C.求
对于函数y=|x+1|的图象下列说法正确的是
是一条直线
是两条直线
是一条线段
是两条射线
如图定义在[-1+∞上的函数fx的图象由一条线段及抛物线的一部分组成则fx的解析式为________
已知函数fx=sinωx+φω>0其图象相邻两条对称轴之间的距离为将函数y=fx的图象向左平移个单位
关于点
对称
关于点
对称
关于直线
对称
关于直线
对称
若函数fx=2sinωx+φω>00<φ<π的图象经过点且相邻两条对称轴间的距离为则f的值为.
函数fx=x2+2x+b的图象与两条坐标轴共有两个交点那么函数y=fx的零点个数是
0
1
2
1或2
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Anycaraccidentisfrighteningbutanaccidentinwhichyourvehicleisthrownintothewaterwithyoutrappedinsideislyterrifying.36Howevermostdeathsresultfrompanicwithoutaplanorunderstandingwhatishappeningtothecarinthewater.Byadoptingabrace支撑positionactingdecisivelyandgettingoutfastyoucansaveyourselffromasinkingvehicle. Braceyourselfforimpact撞击力.Assoonasyou'reawarethatyou'regoingofftheroadandintoabodyofwateradoptabraceposition.Theimpactcouldsetofftheairbagsysteminyourvehiclesoyoushouldplacebothhandsonthesteeringwheelinthetenandtwoposition. Undoyourseatbelt.37Untiethechildrenstartingwiththeoldestfirst.Forgetthecellphonecall.Yourcarisn'tgoingtowaitforyoutomakethecall. 38Leavethedooraloneatthisstageandconcentrateonthewindow.Acar'selectricalsystemshouldworkforuptothreeminutesinwatersotrythemethodofopeningitelectronicallyfirst.Manypeopledon'tthinkaboutthewindowasanescapeoptioneitherbecauseofpanicormisinformationaboutdoorsandsinking. Breakthewindow.Ifyouaren'tabletoopenthewindoworitonlyopenshalfwayyou'llneedtobreakitwithanobjectoryourfoot.Itmayfeelcounter﹣intuitive有悖常理的toletwaterintothecar.39 Escapewhenthecarhasequalized.Ifithasreachedthedramaticstagewherethecarcabinhasbeenfilledwithwaterandithasbecomebalancedyoumustmovequicklyandeffectivelytoensureyoursurvival.40Whilethereisstillairinthecartakeslowdeepbreathsandfocusonwhatyou'redoing. A.Openthewindowassoonasyouhitthewater. B.Survivingasinkingcarisnotasdifficultasyouthink. C.Ittakes60to120secondsforacartofillupwithwaterusually. D.Suchaccidentsareparticularlydangeroustotheriskofdrowning. E.Inconclusionifyouknowwhattodointhewateryouwillbesafe. F.Thisisthefirstthingtoattendtoyetitoftengetsforgotteninthepanic. G.Butthesoonerthewindowisopenthesooneryoucanescapedirectlythroughit.
数列{an}是正项等比数列满足anan+1=4n则数列{}的前n项和Tn=
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JaneEyre JaneEyreanovelwrittenbyCharlotteBrontewaspublishedin1847inEngland.ItisCharlotteBronte'smostfamousbook.JaneEyreisalovestory.IttellsaboutayoungandindependentwomancalledJaneEyrewhoisbraveenoughtopursueherownlove. UncleTom'sCabin UncleTom'sCabinisananti﹣slaverynovelbyAmericanauthorHarrietBeecherStowe.Publishedin1852thenovelhelpedlaythebasefortheCivilWaraccordingtoWillKaufman.WhenAbrahamLincolnmetStoweatthestartoftheCivilWarLincolndeclaredSoitisthelittleladywhostartedthisgreatwar.ThecharacterofUncleTominthenovelisalongsufferingblackslave.Thesadnovelexposestherealityofslavery. GonewiththeWind GonewiththeWindisanovelbyMargaretMitchellin1936.IttellsthestoryofScarlettO'HaraandheradventuresintheAmericanSouthduringtheCivilWar.ShefallsinlovewithRhettButleracitygentleman.Itisoneofthemostfamousbooksofitstimeandwasmadeintoamoviewiththesamename.ThetitletookitsnamefromthelinesanErnestDowsonpoem:IhaveforgottenmuchCynara!Gonewiththewind.Thislinealsoappearsinthebook.ThebookwonthePulitzerPrizeonMay31937. RichDadPoorDad RichDadPoorDadisabookbyRobertKiyosakiandSharonLechter.InthestoryRobert'sownfatherwasthesuperintendent厅长ofeducationinHawaiiandendupdyingpenniless.Hisbestfriend'sfatherdroppedoutofschoolatage13andwentontobecomeoneofthewealthiestmeninHawaii.Itadvocatesfinancialindependencethroughinvestingrealestate地产owningbusinessesandtheuseoffinanceprotectiontactics. 21.WhosebookhadagreatimpactontheCivilWarintheU.S.? A.CharlotteBronte's. B.HarrietBeecherStowe's. C.MargaretMitchell's. D.RobertKiyosakiandSharonLechter's. 22.WherewasthenameofthebookGonewiththeWindtakenfrom? A.Anadventurousstory. B.TheCivilWar. C.Apoem. D.ThePulitzerPrize. 23.WhowillbeinterestedinthebookRichDadPoorDad? A.Awomanwhoiseagerforfreelove. B.AhistorianwhostudiesthehistoryoftheU.S.A. C.Abusinessmanwhowantstobewealthy. D.Apoliticianwhowarnstoenterpolitics.
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如图矩形ABCD中AB=6AD=3EF分别是CDAB的中点将△AED沿折痕AE折起使点D旋转到D1的位置使平面AED1与平面ABCE垂直利用建好的空间直角坐标系使用空间向量坐标法完成下列问题改换坐标系或不使用空间向量坐标法不给分 1证明BE⊥平面AED1 2求二面角A﹣D1E﹣C的余弦值.
设命题p命题qx2﹣2a+1x+aa+1≤0若p是q的充分不必要条件则实数a的取值范围是.
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每句中有一处错误.每处错误仅涉及一个单词的增加删除或修改. 增加:在缺词处加一个漏字符号∧并在其下面写出该加的词. 删除:把多余的词用斜线\划掉. 修改:在错的词下划一横线并在该词下面写出修改后的词. 51.Doyouknowtherewasatimethentheyweregoodfriends?.
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假设你是李华暑假期间你与父母乘飞机去了西藏旅游美丽的风景和当地居民的热情让你流连忘返.请你给在美国的笔友发一封邮件叙述你的所见并发表感想.内容要点如下: 1.欣赏高原风光如高地雪山等; 2.去当地居民家做客体验当地风俗品尝美食; 3.在导游陪同下参观布达拉宫和西藏博物馆购买纪念品并到离拉萨不远的羊八井温泉沐浴; 注意:1.词数100左右开头和结尾已为你写好不计入总词数; 2.短文中不能出现与本人相关的信息. 参考词汇:西藏Tibet;布达拉宫PotalaPalace;拉萨Lhasa; 温泉hotspring;高地highland;沐浴bathevi DearBetty Duringthesummerholiday LiHua.
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如图四边形ABCD中AB=BC=CD=DA=1S△ABDS△BCD分别表示△ABD△BCD的面积则S2△ABD+S2△BCD的最大值为.
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