基础数学知到智慧树章节测试课后答案2024年秋太原理工大学_第1页
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基础数学知到智慧树章节测试课后答案2024年秋太原理工大学第一章单元测试

Let,,theexpressionofequals().

A:B:C:D:

答案:Supposethat

U=R,A=

,then().

A:B:C:D:

答案:AllpropersubsetsofA=are()

A:B:C:D:

答案:WeknowthatAisasetofoddnumbers,Bisasetofevennumbers,andZisasetofintegernumbers.Then=().

A:B:ZC:BD:A

答案:Judgewhichexpressioniscorrect().

A:B:C:D:

答案:Ifa>b

,thena-c>b-c

.()

A:对B:错

答案:对Ifa=2-

,,,then().

A:B:C:D:

答案:If,,,,then()

A:B:C:D:

答案:If

a<b<0

,c>0

,then()

A:B:C:D:

答案:Supposethat

30<x<42

,16<y<24

,thentherangeofvaluesofis().

A:(-6,10)B:(-18,-2)C:(-6,-2)D:(-18,10)

答案:(-18,10)

第二章单元测试

Thefunctionissameasthefunction

y=x

.()

A:对B:错

答案:错Thefunctionissameasthefunction.()

A:对B:错

答案:错Thedomainofis()

A:B:C:D:

答案:Whichfunctionisdecreasingon?()

A:B:C:D:

答案:isodd.()

A:错B:对

答案:对iseven.()

A:错B:对

答案:错Thegraphofissymmetricwithrespecttothey-axis.()

A:对B:错

答案:对Thegraphofissymmetrictothegraphofwithrespecttotheline.()

A:错B:对

答案:对Whichfunctionhasinversefunction?()

A:B:C:D:

答案:;Ifthen()

A:1B:7C:3D:8

答案:3Whichfunction’sdomainis?()

A:B:C:D:

答案:

第三章单元测试

Choosethetrue

statement.()

A:B:C:D:

答案:Giventhat()

A:12B:-1C:0.75D:9

答案:0.75Whichistruechoice?

A:B:C:D:

答案:Thedomainofthefunction,is()

A:B:C:D:

答案:Because,so.()

A:错B:对

答案:对Supposethat,.Thegraphofisareflectionofinthelineof.()

A:对B:错

答案:对If,thenx=

.()

A:对B:错

答案:错Therangeoftheinversefunctionofis.()

A:对B:错

答案:对

A:对B:错

答案:错

第四章单元测试

Ifαisthethirdquadrantangle,thequadrantofα/2is().

A:FirstorsecondquadrantB:SecondorthirdquadrantC:FirstorthirdquadrantD:Secondorfourthquadrant

答案:SecondorfourthquadrantAssumingthatsinθcosθ>0,thenθisin().

A:FirstandfourthquadrantsB:SecondandfourthquadrantsC:FirstandsecondquadrantsD:Firstandthirdquadrants

答案:Firstandthirdquadrantssin()cos()tan(-)=()

A:B:C:D:

答案:Ifsinα>sinβ,then,inthefollowingstatements,()istrue.

A:Assumingthatαandβarethefourthquadrantangles,thentanα>tanβB:Assumingthatαandβarethethirdquadrantangles,thencosα>cosβC:Assumingthatαandβarethefirstquadrantangles,thencosα>cosβ.D:Assumingthatαandβarethesecondquadrantangles,thentanα>tanβ

答案:Assumingthatαandβarethefourthquadrantangles,thentanα>tanβIfsinx+cosx=1/5(),thentanx=()

A:4/3B:-4/3C:3/4D:-3/4

答案:-4/3Thegraphoffunctionf(x)=4sin(2x+/3)issymmetricaboutthelinex=-()

A:错B:对

答案:错Thegraphoffunctionf(x)=4sin(2x+/3)issymmetricaboutthenode(-,0).()

A:错B:对

答案:对LetA={α|α=2k2/3,k},B={β|β=4k2/3,k},C={γ|γ=k2/3,k}.Then.()

A:对B:错

答案:对In(0,2),ifsinx>cosx,thenxisin(/4,).()

A:错B:对

答案:错Moveallverticesonthecurveofthefunctiony=sinx(x∈R)paralleltotheleftby/3,andthenshortenthehorizontalcoordinatesofallverticesontheresultingcurveto1/2oftheoriginal(theverticalcoordinateisunchanged).Thenweobtainthefunctiony=sin(2x+/3),()

A:错B:对

答案:对

第五章单元测试

Iftanθ+1/tanθ=2,thensinθ+cosθ=().

A:B:C:2D:

答案:Ifcos(α+β)=1andsinα=1/3,thenthevalueofsinβis().

A:B:C:D:

答案:Ifsinα+cosα=,thenthevalueoftanα+cotαis().

A:1B:-2C:D:2

答案:2Giventwoacuteanglesαandβ,ifcosα=3/5,tan(α-β)=-1/3,thenthevalueoftanβis().

A:9/13B:13/9C:1/3D:3

答案:3Ifsin(x-)=3/5,thenthevalueofsin2xis().

A:16/25B:-7/25C:7/25D:9/25

答案:7/25Iftanα=4,then.()

A:对B:错

答案:对Foranyα,β∈(0,),iftanα=(1+sinβ)/cosβ,then2α-β=.()

A:对B:错

答案:对If,thenthevalueofis2/5.()

A:错B:对

答案:对Foranyα∈(0,),if,thentanα=1/2.()

A:对B:错

答案:错Iff(x)=cos(/3+x)cos(/3-x)-sinxcosx+1/4,thentheminimalperiodis.()

A:对B:错

答案:对

第六章单元测试

Thefirstfourtermsofasequencearegiven:-4,7,-10,13,....Thegeneraltermformulaofthesequenceis()

A:B:C:D:

答案:Inthefollowingnumbers,threenumbersinwhichgroupisanarithmeticprogression?()

A:B:C:D:

答案:Forthearithmeticprogression,,,then()

A:B:C:D:

答案:Inthegeometricprogression,,,then()

A:B:C:D:

答案:;As,thelimitofthesequenceis()

A:B:2C:0D:1

答案:1Inthearithmeticprogression,,,then()

A:19B:17C:16D:15

答案:17Inthegeometricprogression,,,then()

A:32B:16C:8D:2

答案:16Supposethatthearithmeticprogressionsuchthat,,then.

()

A:错B:对

答案:对Asnbecomessufficientlylarge,thetermsofthesequenceapproach1.

()

A:对B:错

答案:错

A:错B:对

答案:错

第七章单元测试

If,whereandarerealnumbers,thenfindthevaluesofand.()

A:B:C:D:

答案:Expressintheformof.()

A:B:C:D:

答案:()

A:B:0C:1D:

答案:0Expressthegivenexpressionintheformandfindthevaluesofand.()

A:B:C:D:

答案:Findtherealvaluesofandsuchthat.()

A:,B:,C:,D:,

答案:,Writeintheformx+iy

of()

A:B:C:D:

答案:Writeintheformof()

A:B:1C:0D:

答案:Writeintheformof.()

A:B:C:D:

答案:Giveallroots(solutions)of.()

A:B:C:D:

答案:;Splitintofactors:()

A:B:C:D:

答案:

第八章单元测试

Thereare6studentsstandinginarowwith3boysand3girls.Iftheboysdonotstandattwoendpointsandonlytwogirlsareadjacentamongthe3girls,howmanydifferentarrangementsarethere?()

A:96B:288C:216D:360

答案:288Choose3outof5malesand4femalestoformasmallteamcontainingbothmalesandfemales.Howmanydifferentteamscanyoubuild?()

A:80B:140C:70D:100

答案:70AandBwillchoose2subjectsfrom4subjectsandAandBaredifferentinatleastonesubject.HowmanydifferentwaystochoosesubjectsforAandB?()

A:6B:30C:36D:12

答案:30Thesumofthecoefficientsintheexpansionofis2.Whatistheconstantterminthebinomialexpansion?()

A:-10B:10C:20D:-20

答案:10Whatistheconstantterminthebinomialexpansionof?()

A:120B:180C:50D:210

答案:2105studentssignuptoparticipateintwoextracurricularactivitygroups,andeachstudentislimitedjoinonegroup.Thereare32differentwaystosignup.()

A:错B:对

答案:对Ifthespellingorderoftheword'hello'isincorrect,theremaybe60typesofwritingerrors.()

A:对B:错

答案:错Usingonly1,2,and3toformafourdigitnumber,itisstipulatedthatthesethreenumbersmustbeusedsimultaneouslyandthesamenumbercannotappearadjacent.Thereare18suchfourdigits.()

A:对B:错

答案:对Thecoefficientofinthebinomialexpansionofis24.()

A:对B:错

答案:对Thecoefficientofinthebinomialexpansionofis20.()

A:对B:错

答案:错

第九章单元测试

Whatisthevectorwhereispointandispoint.()

A:B:C:D:

答案:Given,,.Find:.()

A:-3B:-2C:3D:2

答案:3Given,,.Find:.()

A:5B:6C:-6D:-5

答案:5Given,,.Find:theanglebetweenand.()

A:B:C:D:

答案:Vectorsandaredefinedintermsofandasand.()

If,findthevaluesofand.

A:,B:,C:,D:,

答案:,Isthatthevectorsandareperpendicular?()

A:对B:错

答案:对Ifand,findandtheanglebetweenand.()

A:,B:,C:,D:,

答案:,Let,,find.()

A:3B:4C:-4D:-3

答案:4Letbeastandard-positionvectorwithterminalpoint.Letbeavectorwithinitialpointandterminalpoint.Findthemagnitudeofvector.()

A:10B:15C:-10D:-15

答案:15Considervectors,,.Determinethescalarsandsuchthat.()

A:,B:,C:,D:,

答案:,

第十章单元测试

Astraightlinewithagradientofpassesthroughthepoint.Findtheequationoftheline.()

A:B:C:D:

答案:Thegraphisastraightline.Finditsgradient,andtheinterceptwiththe-axis.()

A:,2B:,2C:,-2D:,-2

答案:,2Findtheequationofthelinethatpassesthroughthepoint(1,2)andisperpendicularto.()

A:B:C:D:

答案:Writeanequationforthelinepassingthrougheachofpoints.()

A:B:C:D:

答案:Writeanequationforthelinepassingthrougheachofpoints

(0,6),(-4,8).

A:B:C:D:

答案:Writeanequationforthelinepassingthrougheachofpoints(-1,-7),(5,23).()

A:B:C:D:

答案:Writeanequationforthelinepassingthrougheachofpoints(3,10),(4,7).()

A:B:C:D:

答案:Determinetheequationofthelinethatjoinsthepointswithcoordinates(4,8)and(10,11).()

A:B:C:D:

答案:Determinethecoordinatesofthepointwherethelinesandcross.()

A:(2,5)B:(-2,5)C:(-2,-5)D:(2,-5)

答案:(2,5)Whatisthegradientoftheline?()

A:-2B:-1C:2D:1

答案:2

第十一章单元测试

Writetheequationofacirclewhosecenterisat(3,-2)andhasaradiusof11.()

A:B:C:D:

答案:Determinethevertexof.()

A:(-5,-3)B:(5,3)C:(5,-3)D:(-5,3)

答案:(5,3)Completethesquareontheandportionsoftheequationandwritetheequationintothestandardformoftheequationofthehyperbola.()

A:B:C:D:

答案:Writeinstandardformandfindtheeccentricity.()

A:,.B:,.C:,.D:,.

答案:,.Solvetheequation.()

A:B:C:D:

答案:;Write-10x+35intheform.()

A:B:C:D:

答案:Findthecoordinatesofthepointsofintersectionofthegivenstraightl

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