首页
试卷库
试题库
当前位置:
X题卡
>
所有题目
>
题目详情
设函数f(x)=. (1)求f(-1),f(0),f(2)的值; (2)求不等式f(x)≤2的解集.
查看本题答案
包含此试题的试卷
高二下学期数学《》真题及答案
点击查看
你可能感兴趣的试题
设函数fx=-xx-a2x∈R其中a∈R.1当a=1时求曲线y=fx在点2f2处的切线方程2当a≠0
设函数y=fx是定义在0+∞上的减函数并且满足fxy=fx+fyf=1.1求f9的值.2如果fx-f
设函数fx=acos2x+a-1cosx+1其中a>0记|fx|的最大值为A Ⅰ求f'x Ⅱ求A
设函数fx=kx3-3x2+1k≥0.1求函数fx的单调区间2若函数fx的极小值大于0.求k的取值范
设fx=a>0b>0.1当a=b=1时证明:fx不是奇函数;2设fx是奇函数求a与b的值;3求2中函
已知函数fx=ax2﹣4x+cac∈R.满足f2=9fc<a且函数fx的值域为[0+∞.Ⅰ求函数fx
已知函数fx=x2-1与函数gx=alnxa≠0.1若fxgx的图象在点10处有公共的切线求实数a的
设函数fx=ex﹣ax﹣1.1求函数fx的单调区间和极值2当a>0时若函数fx在区间02]上存在唯一
.已知函数fx=ax+lnxa<01若当x∈[1e]时函数fx的最大值为﹣3求a的值2设gx=fx+
设函数fx的定义域为-33满足f-x=-fx且对任意xy都有fx-fy=fx-y当x0f1=-2.1
设fx=ax3+bx+ca≠0为奇函数其图象在点1f1处的切线与直线x-6y-7=0垂直导函数f′x
设fx是定义在[﹣11]上的奇函数且当﹣1≤x≤0时fx=2x3+5ax2+4a2x+b.Ⅰ求函数f
设函数fx=lnx+ln2-x+axa>01当a=1时求fx的单调区间2若fx在01]上的最大值为求
已知函数fx=-bx+lnxab∈R.Ⅰ若a=b=1求fx在点1f1处的切线方程Ⅱ设a<0求fx的单
1设fx是定义在实数集R上的函数满足f0=1且对任意实数ab有fa-b=fa-b2a-b+1求fx;
已知函数fx=loga1+xgx=loga1-xa>0a≠1.1设a=2函数fx的定义域为[363]
设fx是-∞+∞上的奇函数fx+2=-fx当0≤x≤1时fx=x.1求fπ的值;2当-4≤x≤4时求
已知函数fx=loga1+xgx=loga1﹣xa>0且a≠1.1设a=2函数fx的定义域为[363
已知函数fx=x2-1与函数gx=alnxa≠0.1若fxgx的图像在点10处有公共的切线求实数a的
设函数fx=ex-1-x-ax2 1若a=0求fx的单调区间 2若当x≥0时fx≥0求a的取值范围
热门试题
更多
鲁班锁是中国传统的智力玩具起源于古代汉族建筑中首创的榫卯结构这种三维的拼插器具内部的凹凸部分即榫卯结构啮合十分巧妙外观看是严丝合缝的十字立方体其上下左右前后完全对称.从外表上看六根等长的正四棱柱体分成三组经90°榫卯起来如图若正四棱柱体的高为6底面正方形的边长为1现将该鲁班锁放进一个球形容器内则该球形容器的表面积的最小值为.容器壁的厚度忽略不计
8分AninternationalteamofresearchersfromtheUniversityofOxfordhavefoundthatthewaypeopleusetheInternetiscloselytiedtotheseasonalmovementsinthenaturalworld.Theironlinespeciessearchesfollowthepatternsofseasonalanimalmigrations迁徙. Migratorybirds候鸟floodbacktowheretheyreproduceeveryspring.Thatmigratorybehaviorisaccompaniedbysomehumanbehavior.InEnglish﹣languageWikipedia维基百科theonlinesearchesformigratoryspeciestendtoincreaseinspringwhenthosebirdsarriveintheUnitedStatessaidtheleadauthorJohnMittermeier. Andnotjustbirds.Mittermeierandhisteamsurveyednearly2.5billionWikipediasearchrecordsfor32000speciesacross245languages.Theyalsosawvariablesearchratesforinsectshorsetailsandfloweringplants.SeasonaltrendsseemedtobewidespreadinWikipediabehaviorformanyspeciesofplantsandanimals. Thisfindingsuggestsnewwaystomonitorchangesintheworld'sbiologicaldiversity.Italsoshowsnewwaystoseehowmuchpeoplecareaboutnatureandwhichspeciesandareasmightbethemosteffectivetargetsforconservation. Mittermeierisencouragedbythesearchresults.HecommentedIthinkthere'saconcernamongconservationists生态环境保护者thatpeoplearelosingtouchwiththenaturalworldandthatthey'renotinteractingwithnativespeciesanymore.Andsointhatsenseitwasreallyexcitingandquiteunexpectedformetoseepeople'sWikipediainterestcloselyrelatedtochangesinnature. RichardGrenyerAssociateProfessorfromtheUniversityofOxfordsayssearchdataisusefultoconservationbiologistsByusingthesebigdataapproacheswecandirectourattentiontowardsthedifficultquestionsinmodernconservationwhichspeciesandareasarechangingandwherearethepeoplewhocarethemostandcandothemosttohelp. 1Whathaveresearchersfoundaboutspeciessearches A.Theystrengthentiesamongpeople. B.Theyaffecttheanimalmovements. C.Theydifferinlanguagebackgrounds. D.Theyreflectanimalmigrationseasons. 2WhatisthepurposeofwritingParagraph3 A.Tosummarizetheresearchprocess. B.Tofurthersupporttheresearchfindings. C.Toshowthevarietyofspeciessearches. D.Topresentresearchers'heavyworkload. 3HowdoesMittermeierfeelaboutthesearchresults A.SatisfiedwithWikipedia'sservice. B.WorriedaboutWikipediabehavior. C.Amazedatpeople'scareaboutnature. D.Sadaboutpeople'snotgettingclosetonature. 4WhydoesRichardthinksuchsearchdataisuseful A.Ithelpstoaimatconservationtargets. B.Itincreasesinterestinbigdataapproaches. C.Itkeepstrackoftrendsinbiologists'work. D.Itpushespeopletosolvedifficultproblems.
若函数fx=sinx+cosx﹣2sinxcosx+1﹣a有零点则实数a的取值范围为
已知函数fx=若方程3mf2x﹣2m+3fx+2=0有5个解则m的取值范围是
已知在△ABC中且则x﹣y的值为
已知函数fx=Asinωx+φA<0ω>0的值域为且图象在同一周期内过两点则Aω的值分别为
已知函数. 1求函数y=fx的值域和值域 2设ABC为△ABC的三个内角若求cosA的值.
已知fx=若数列{an}满足a1=an+1=fan则a20等于
已知样本91011xy的平均数是10方差是2则xy的值为
已知向量x∈[0π]. 1若求x的值 2设若fx﹣m≤0m∈R恒成立求m的取值范围.
已知a=log45b=log23c=sin2则abc的大小关系为
计算的结果为
已知圆Mx2+y﹣42=4点P是直线lx﹣2y=0上的一动点过点P作圆M的切线PAPB切点为AB. Ⅰ当切线PA的长度为2时求点P的坐标 Ⅱ若△PAM的外接圆为圆N试问当P运动时圆N是否过定点若存在求出所有的定点的坐标若不存在说明理由 Ⅲ求线段AB长度的最小值.
在区间05内任取一个数则使有意义的概率为
复数z=ii﹣1在复平面内对应的点位于
若向量的夹角为且|=2||=1则向量与向量+2的夹角为
已知y=fx是定义在R上的奇函数当x<0时fx=x+2那么不等式2fx﹣1<0的解集是
如图是由正方体与三棱锥组合而成的几何体的三视图则该几何体的表面积为
在△ABC中已知角ABC的对边分别为abc且acosB﹣bcosA=b+c. 1求角A的大小 2若a=4求△ABC的面积.
若某程序框图如图所示则该程序运行后输出的值是
8分 TheGreatBookSwap Hisixthgraders!MynameisTonyHill.IampresidentoftheWindsorHighSchoolStudentCouncil.Yourteacherletmecometoyourclasstodaytotellyouaboutareadingprojectthatwewanttodoandweneedyourhelp. Ifyou'relikemeyoulovetoreadbutsometimeshaveahardtimefindingbooksyouwanttoread.Itseemsasifthebestbooksatthelibraryarealwayscheckedout.Tohelpgetmorebooksintopeople'shandswe'replanningtheGreatCommunity社区BookSwap. Tomaketheprojectasuccessweneedeveryone'shelp.Askyourparentsifthereareanyunusedbookstakingupspace.Askyourfriendsandneighbourstodonateunwantedbooks.Maybeyouhavebooksyoulikedwhenyouwereyoungerbutdon'treadanymore.Bringthemtoschoolandmakeayoungreaderhappy.Weneedallkindsofbooksforallkindsofreaders! TherearemanytimesI'dliketogobuynewbooksbutIdon'thavealotofmoneytospendonthem.Wouldn'titbegreattoswapbooksrighthereinourcommunityVolunteerswillorganizethedonatedbooks.Thenthebookswillbedisplayedatthecommunitycenter.Everyonewillbeabletoreadandhopefullyfindtheperfectbook.Studentswillbeallowedtochooseuptotwobooksduringeachdayoftheswap.OurplanistohavethebookswapthefirstSaturdayofeverymonth. Ifyoulikereadingjustcomeandlookthroughthecollectionofbooks.Eachgradewillhaveitsownweektobringinbooks.Rightnoweighthgradeisbringinginbooks.Wheneverygradehasbroughtinbookswewillhavequiteaselection.Youwillprobablyfindatleastonenewbookthatyou'dliketoread.WhoknowsMaybeyou'llfindabooksogoodthatyouwon'tbeabletoputitdown. WhatareyouwaitingforGohomeandcleanoutyourbookshelvesandclosets! 1WhydidTonyHillcometotheclassofsixthgraders A.Toexplainareadingproject. B.Tointroduceanewly﹣builtlibrary. C.Toaskthestudentstohelpdonatebooks. D.Togivethesixthgradersadviceonreading. 2WhatisParagraph4mainlyabout A.Howthebookswapwillwork. B.Whenbookswillbebroughtin. C.Whatkindsofbooksareneeded. D.Whythebookswapisnecessary. 3Whatdoestheunderlinedsentenceinthelastparagraphindicate A.Morebooksareneededinthefuture. B.Volunteersplayanimportantroleintheproject. C.Everyoneissuretobeabletofindthebookshewants. D.Studentshavealreadystartedhelpingwiththebookswap. 4WhichofthefollowingwordsbestdescribesTonyHill A.Realistic. B.Persuasive. C.Independent. D.Ambitious.
30分 DoubleTrouble WhenIwaseightIwantedatoyandneeded﹩10tobuyit.ButasusualIwasbroken.Idecidedtoaskmy11﹣year﹣oldsisterKathleenforaloan.Iwenttoherroom1herforthecash.Laughingsheagreedto2methemoneybutaddedIwillchargeyou10percentcompoundinterestevery3untilyoupaymeback. Compoundinterest﹣﹣﹣what'sthatIasked. Wellinterestiswhatyoucallthe4moneyborrowershavetopaybackonaloansheexplained.Compoundinterestmeansthattheinterestpaymentsgetbiggerandbiggerthe5youtaketopaybacktheloan.Torepaytheloanyouwillneedtogiveme﹩11afteronemonth.Ifyouwaittwomonthstopaymebackyour6willgrowfrom﹩10to﹩11.SoI'llbechargingyouintereston﹩11.ThenIwilladdthatinteresttothe﹩11youalreadyowemefora7of﹩12.10.That'swhatyou'lloweaftertwomonths. Sure.IgetitIsaid.ThoughtruthfullyIwasgetting8. KathleenlentmethemoneyandIboughtthetoy.Mybirthdaycameamonthlaterandmymomgaveme﹩10.9thatwasjusttheamountIneededtobuyanothertoyIwanted10.Iputoffpayingmysisterforamonth.AfteranothermonthI11abouttheloan. SeveralmonthslateronChristmasmorningmysisterandIeachfounda﹩02billinourstockings.Iwasjustputtingitintomypocket12Kathleentappedmeontheshoulder. Sorrykiddo.That'smine.I'm13onyourdebt. HuhThenIrememberedtheloan.Hey!HowcanitbethatmuchI14borrowed﹩10. Trueshesaidbutinteresthasbeencompoundingforeightmonths.Nowyou15me﹩21.43.Shepausedthenadded.Youcanpaymethe﹩1.43. I16tobelievethata﹩10loancouldmorethandoublesoquickly.Muchtomy17mysistergotherpencilandtabletandshowedmeexactlyhowitalladdedup. Myhead18asItriedtokeeptrackofKathleen's19butthistimeIgotthebasicideaofcompoundinterest.I20thehardwaythatborrowingmoneycanbedoubletroubleinnotime. 1A.blaming B.begging C.searching D.preparing 2A.pay B.send C.lend D.hand 3A.month B.year C.week D.day 4A.little B.same C.enough D.extra 5A.shorter B.longer C.more D.less 6A.cash B.saving C.note D.debt 7A.total B.cost C.number D.bill 8A.encouraged B.shocked C.confused D.satisfied 9A.Gradually B.Obviously C.Unfortunately D.Hopefully 10A.seriously B.anxiously C.secretly D.desperately 11A.forgot B.knew C.talked D.cared 12A.after B.until C.while D.when 13A.carrying B.collecting C.relying D.focusing 14A.normally B.nearly C.only D.really 15A.owe B.offer C.take D.give 16A.decided B.refused C.pretended D.managed 17A.relief B.delight C.annoyance D.regret 18A.turned B.nodded C.stuck D.hurt 19A.calculations B.excuses C.directions D.discoveries 20A.explored B.learned C.explained D.questioned
在△ABC中已知A5﹣2B73且AC边的中点M在y轴上BC边的中点N在x轴上求 1顶点C的坐标 2直线MN的方程.
某企业用180万元购买一套新设备该套设备预计平均每年能给企业带来100万元的收入为了维护设备的正常运行第一年需要各种维护费用10万元且从第二年开始每年比上一年所需的维护费用要增加10万元 1求该设备给企业带来的总利润y万元与使用年数xx∈N*的函数关系 2试计算这套设备使用多少年可使年平均利润最大年平均利润最大为多少万元
在等差数列{an}中a2=﹣1a5=﹣7则{an}的前10项和为
函数fx=Acosωx+φ其中A>0ω>0|φ|<的图象如图所示为了得到gx=Asinωx的图象只需把y=fx的图象上所有的点
有五条线段长度分别为23579从这五条线段中任取三条则所取三条线段能构成一个三角形的概率为_.
35分你班英语课上以IHaveADream为题进行说的练习请你写一份讲稿内容包括 1.你的梦想是什么 2.你为何有此梦想 3.你如何实现梦想. 注意 1.词数不少于50 2.开头和结尾已给出不计入总词数. Helloeverybody! Thankyou.
函数是奇函数则flog23=
已知当x=θ时函数a∈R且a>1取得最小值则tanθ=﹣2时a的值为.
热门题库
更多
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
高二下学期生物
高三下学期生物
高三下学期化学
高三上学期英语
高二下学期英语
教案备课库
高三下学期英语