Mathematics1HLPaper1spa.docx
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Mathematics1HLPaper1spa
IBDIPLOMAPROGRAMMEPROGRAMMEDUDIPLÔMEDUBIPROGRAMADELDIPLOMADELBI
MATHEMATICSHIGHERLEVELPAPER1
Wednesday3November2004(afternoon)
2hours
N04/5/MATHL/HP1/ENG/TZ0/XX
88047401
Schoolcode
Candidatecode
INSTRUCTIONSTOCANDIDATES
•Writeyourschoolcodeandcandidatecodeintheboxesabove.
•Donotopenthisexaminationpaperuntilinstructedtodoso.
•Answerallthequestionsinthespacesprovided.
•Unlessotherwisestatedinthequestion,allnumericalanswersmustbegivenexactlyortothreesignificantfigures.
•Indicatethemakeandmodelofyourcalculatorintheappropriateboxonyourcoversheet.
Maximummarkswillbegivenforcorrectanswers.Whereanansweriswrong,somemarksmaybegivenforcorrectmethod,providedthisisshownbywrittenworking.Workingmaybecontinuedbelowthebox,ifnecessary.Solutionsfoundfromagraphicdisplaycalculatorshouldbesupportedbysuitableworking,e.g.ifgraphsareusedtofindasolution,youshouldsketchtheseaspartofyouranswer.
1.Consider
f(x)=x3-2x2-5x+k.Findthevalueofkif(x+2)isafactorof
f(x).
Working:
Answer:
⎛1-12⎞
2.Giventhatthematrix
A=⎜2p3⎟
issingular,findthevalueofp.
⎜⎟
⎜1-25⎟
⎝⎠
Working:
Answer:
3.Thesumofthefirstntermsofaseriesisgivenby
n
S=2n2-n,wheren∈®+.
(a)Findthefirstthreetermsoftheseries.
(b)Findanexpressionforthenthtermoftheseries,givingyouranswerintermsofn.
Working:
Answers:
(a)
(b)
4.Giventhat(a+i)(2-bi)=7-i,findthevalueofaandofb,wherea,b∈®.
Working:
Answer:
5.
If
y=ln(2x-1),find
d2y
.
dx2
Working:
Answer:
6.Afairsix-sideddie,withsidesnumbered1,1,2,3,4,5isthrown.Findthemeanandvarianceofthescore.
Working:
Answer:
7.(a)FindthelargestsetSofvaluesofxsuchthatthefunctionvalues.
(b)FindtherangeofthefunctionfdefinedonthedomainS.
f(x)=1
takesreal
Working:
Answers:
(a)
(b)
8.(a)Findtheexpansionof(2+x)5,givingyouranswerinascendingpowersofx.
(b)Bylettingx=0.01orotherwise,findtheexactvalueof2.015.
Working:
Answers:
(a)
(b)
9.
B
Findtheareaoftheshadedregion.
Working:
Answer:
10.Considertheequatione-x=cos2x,for0≤x≤2π.
(a)Howmanysolutionsaretheretothisequation
(b)Findthesolutionclosestto2π,givingyouranswertofourdecimalplaces.
Working:
Answers:
(a)
(b)
11.ConsiderthefourpointsA(1,4,-1),B(2,5,-2),C(5,6,3)andD(8,8,4).Findthepointof
intersectionofthelines(AB)and(CD).
Working:
Answer:
12.AcontinuousrandomvariableXhasprobabilitydensityfunctiongivenby
f(x)=k(2x-x2),for0≤x≤2
f(x)=0,elsewhere.
(a)Findthevalueofk.
(b)FindP(0.25≤x≤0.5).
Working:
Answers:
(a)
(b)
13.Giventhat
z∈%,solvetheequation
z3-8i=0,givingyouranswersintheform
z=r(cosθ+isinθ).
Working:
Answer:
14.Findthetotalareaofthetworegionsenclosedbythecurvey=x3-3x2-9x+27andtheline
y=x+3.
Working:
Answer:
15.Findtherangeofvaluesofmsuchthatforallx
m(x+1)≤x2.
Working:
Answer:
16.
Findtheequationofthenormaltothecurve
x3+y3-9xy=0
atthepoint(2,4).
17.Usingthesubstitution2x=sinθ,orotherwise,find⎰(1-4x2)dx.
18.Aclosedcylindricalcanhasavolumeof500cm3.Theheightofthecanishcmandtheradiusofthebaseisrcm.
(a)FindanexpressionforthetotalsurfaceareaAofthecan,intermsofr.
(b)GiventhatthereisaminimumvalueofAforr>0,findthisvalueofr.
Working:
Answers:
(a)
(b)
19.(a)FindthecartesianequationoftheplanethatcontainstheoriginOandthetwopoints
A(1,1,1)andB(2,-1,3).
(b)FindthedistancefromthepointC(10,5,1)totheplaneOAB.
Working:
Answers:
(a)
(b)
20.Thefollowingdiagramshowsthelines
x-2y-4=0,x+y=5
andthepoint
P(1,1).Aline
isdrawnfromPtointersectwithmidpointof[QR].
x-2y-4=0
y
10
atQ,andwith
x+y=5
atR,sothatPisthe
8
6
2(1,
–10x
–2
–4
–6
–8
FindtheexactcoordinatesofQandofR.
Working:
Answer: