对数函数基础练习题

这可让他犯了难，施工现场距离项目部很远，没有车还真是不方便office,branchoffices(jurisdiction),riskmanagement,marketingmanagementsectorthroughsupervisionandinspectionfoundproblems,shouldbeassignedtheinvestigatorsarecorrectedinatimelymanner.27ththefifthchapterpenaltyunderanyofthefollowingacts,thentherelevantprovisionstopunishtheinvestigators,accordingtotheBank.Toconstituteacrimeshallbeinvestigatedforcriminalresponsibility:(A)onthebusinessthatarenotinvolvedintheinvestigation,issuedasurvey.(B)customercreditinformationarenotthoroughverification.(Iii)toparticipateincreditcustomersurveyisnotinplace,customersanddataisincomplete,untrue;heknowsbearacounterfeitedclientsissuingcredit.(D)doesnotprovideforduediligenceofcreditbusiness,pre-loaninvestigationform,concealingfactsorprovidingfalseinformationorshouldbefoundinanormalinvestigationfailedtodiscovertheriskfactors,leadtothereviewandapprovalpolicyerrors,loanrisk.(Five)onloanguaranteesofsurveynotinplace,notbyprovidesonarrived,andpledgerealforfieldverification,andassessment,andidentificationandregistration,notaccordingtoprovidesonguarantorofguaranteesqualificationandguaranteescapacityforsurveyverified,ledtoguaranteesloanlostauthenticity,andlegitimacy,andeffectivenessof;cycleloanbusinessintheofmortgage对数函数基础练习题选择题1．与函数y＝(14)x的图像关于直线y＝x对称的函数是()A．y＝4xB．y＝4－xC．y＝log14xD．y＝log4x2．下列结论正确的是()①lg(lg10)＝0②lg(lne)＝0③若10＝lgx则x＝10④若e＝lnx，则x＝e2A．①③B．②④C．①②D．③④3．已知logx8＝3，则x的值为()A.12B．2C．3D．44．log5b＝2，化为指数式是()A．5b＝2B．b5＝2C．52＝bD．b2＝55．若a0，且a≠1，x∈R，y∈R，且xy0，则下列各式不恒成立的是()①logax2＝2logax；②logax2＝2loga|x|；③loga(xy)＝logax＋logay；④loga(xy)＝loga|x|＋loga|y|.A．②④B．①③C．①④D．②③6．计算log916·log881的值为()A．18B.118C.83D.387．已知lg2＝a，lg3＝b，则log36＝()这可让他犯了难，施工现场距离项目部很远，没有车还真是不方便office,branchoffices(jurisdiction),riskmanagement,marketingmanagementsectorthroughsupervisionandinspectionfoundproblems,shouldbeassignedtheinvestigatorsarecorrectedinatimelymanner.27ththefifthchapterpenaltyunderanyofthefollowingacts,thentherelevantprovisionstopunishtheinvestigators,accordingtotheBank.Toconstituteacrimeshallbeinvestigatedforcriminalresponsibility:(A)onthebusinessthatarenotinvolvedintheinvestigation,issuedasurvey.(B)customercreditinformationarenotthoroughverification.(Iii)toparticipateincreditcustomersurveyisnotinplace,customersanddataisincomplete,untrue;heknowsbearacounterfeitedclientsissuingcredit.(D)doesnotprovideforduediligenceofcreditbusiness,pre-loaninvestigationform,concealingfactsorprovidingfalseinformationorshouldbefoundinanormalinvestigationfailedtodiscovertheriskfactors,leadtothereviewandapprovalpolicyerrors,loanrisk.(Five)onloanguaranteesofsurveynotinplace,notbyprovidesonarrived,andpledgerealforfieldverification,andassessment,andidentificationandregistration,notaccordingtoprovidesonguarantorofguaranteesqualificationandguaranteescapacityforsurveyverified,ledtoguaranteesloanlostauthenticity,andlegitimacy,andeffectivenessof;cycleloanbusinessintheofmortgageA.a＋baB.a＋bbC.aa＋bD.ba＋b8．lg8＋3lg5的值为()A．－3B．－1C．1D．39．3log9log28的值是（）A．32B．1C．23D．210．已知x=2+1,则log4(x3－x－6)等于（）A.23B.45C.0D.2111.已知f(ex)=x，则f(5)等于（）A．e5B．5eC．ln5D．log5e12．log5b＝2，化为指数式是()A．5b＝2B．b5＝2C．52＝bD．b2＝513.函数y=log(2x-1)23x的定义域是（）（A）（32，1）（1，+）（B）（21，1）（1，+）（C）（32，+）（D）（21，+）14.若logm9logn90,那么m,n满足的条件是（）（A）mn1（B）nm1（C）0nm1（D）0mn115．若1xb,a=log２bx,c=logax,则a,b,c的关系是（）（A）abc（B）acb（C）cba（D）cab16.已知函数y=loga(2-ax)在[0，1]上是x的减函数，则a的取值范围是（）（A）（0，1）（B）（1，2）（C）（0，2）（D）[2，+)17．已知2lg(x－2y)=lgx＋lgy，则yx的值为(）A．1B．4C．1或4D．4或这可让他犯了难，施工现场距离项目部很远，没有车还真是不方便office,branchoffices(jurisdiction),riskmanagement,marketingmanagementsectorthroughsupervisionandinspectionfoundproblems,shouldbeassignedtheinvestigatorsarecorrectedinatimelymanner.27ththefifthchapterpenaltyunderanyofthefollowingacts,thentherelevantprovisionstopunishtheinvestigators,accordingtotheBank.Toconstituteacrimeshallbeinvestigatedforcriminalresponsibility:(A)onthebusinessthatarenotinvolvedintheinvestigation,issuedasurvey.(B)customercreditinformationarenotthoroughverification.(Iii)toparticipateincreditcustomersurveyisnotinplace,customersanddataisincomplete,untrue;heknowsbearacounterfeitedclientsissuingcredit.(D)doesnotprovideforduediligenceofcreditbusiness,pre-loaninvestigationform,concealingfactsorprovidingfalseinformationorshouldbefoundinanormalinvestigationfailedtodiscovertheriskfactors,leadtothereviewandapprovalpolicyerrors,loanrisk.(Five)onloanguaranteesofsurveynotinplace,notbyprovidesonarrived,andpledgerealforfieldverification,andassessment,andidentificationandregistration,notaccordingtoprovidesonguarantorofguaranteesqualificationandguaranteescapacityforsurveyverified,ledtoguaranteesloanlostauthenticity,andlegitimacy,andeffectivenessof;cycleloanbusinessintheofmortgage18．若m＞n＞1，且0＜a＜1，则下面四个结论中不正确的是[]A．m-a＜n-aB．am＜a-nCmnDlogmlognaaa2a2．＜．＜19.设5.1348.029.0121,8,4yyy，则()A.213yyyB312yyyC321yyyD231yyy20．在b＝log(a－2)(5－a)中，实数a的取值范围是()A．a5或a2B．2a3或3a5C．2a5D．3a421．方程2log3x＝14的解是()A．9B.33C.3D.1922．log5[log3(log2x)]＝0，则x12等于()A.36B.39C.24D.2323．若log34·log8m＝log416，则m等于()A．3B．9C．18D．2724．函数