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Lecture notes

IB microeconomics notes

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IB Economics – Microeconomics (HL/SL Notes) Ace your IB Economics exams with this complete Microeconomics guide, designed to simplify complex theory into clear, exam-ready notes. Perfect for both HL & SL students who want structured explanations, diagrams, and evaluation points. What’s inside: • Demand & Supply: law of demand, shifts vs movements, determinants, elasticity (PED, PES, YED, XED) • Market Equilibrium: shortages, surpluses, role of price mechanism (signalling, incentives, rationing) • Consumer & Producer Surplus + community surplus • Government Intervention: taxes, subsidies, price controls (ceilings & floors), consequences • Market Failure: externalities (positive/negative), merit/demerit goods, common pool resources, public goods • Asymmetric information & market power • Market Structures: perfect competition, monopoly, monopolistic competition, oligopoly, game theory basics • Business Objectives: profit maximization, CSR, growth, market share, satisficing • Behavioral Economics: bounded rationality, choice architecture, nudges ️ Comprehensive coverage of all IB Microeconomics syllabus topics ️ Includes key definitions, diagrams, and evaluation points for Paper 1 & 2 essays ️ Clear structure for quick revision & efficient learning Why these notes? They turn Microeconomics into a step-by-step, exam-focused toolkit, saving you hours of rewriting and ensuring you have the perfect balance of theory + evaluation to score top marks.

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Uploaded on
September 11, 2025
Number of pages
13
Written in
2023/2024
Type
Lecture notes
Professor(s)
Teacher
Contains
All classes

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Demandisthequantity
COCO
ofa or that
OMCS
are
good service customers
willingandabletobuyatagivenprice i
a particularperiod oftime
Refers tothewillingnessandabilityofconsumerstopayacertaininamarkettoobtainparticul
gls
riceistheamountofmoneyconsumerspaytopurchase agoodofservice
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income consumersrises ceter hismeanstha
consumers areabletobuymoreproductsatlowerprices

Thesubstitutioneffectasthepriceof sfallsmoreconsumersareableto
ag paysotheyaremorelikelytobuytheproduc
thatis substituteitforalternativeproductsthatconsumersmighthavepreviouslybought
Theawofdiminishingmarginalutility aspeopleconsumemoreofaarticulargoodservice heutilitysatisfaction
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consumptiondeclines tenceconsumerswillpurchasemoreofthe
sameproductonly alowerprat
the the
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quantitydemandedcontractsfromQ1 Q2
QD
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Relationshipbetweenanindividualconsumer'sdemand marketdemand
marketdemandcurve refers sumtothe ofall
individualconsumer'sdemand foraproductin a
marketatagivenpricelevel
Amarketisanyplacewheretransactionstakeplacebetweenbuyersandsellers
on pricedeterminants Habitsfashiontastes income substitutes complements advertising
of demand governmentpolicies economy

Movementsalongthedemandcurve shiftsofthedemandcurve
Achangeinpriceofglscauses amovementalongthedemandcurve
Anincrease inpricewillcause a contraction inQD
AreductioninpricewillcauseanexpansioninQD

fallinthepricefromp1topacausesdemand
III
fifansion
toexpandfromQ1 Q2leterisparibus

a a bQD Achangeinthenonpricedeterminantsthataffectdemandcausesashiftinthedemandcurve
but amovementalongademandcurveiscausedbychangesinthepriceofaproduct

, Supplyreferstothequantityofglsthafirmsarewilling abletosellatanygivenpricepertimeperio
awofsupply hereis apositiverelationshipbetweenthequantitysuppliedofaproduct itsprice
ceterisparibus
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more
to
Morefirmsenterthemarketashigherpricesallowthem coverproduction
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Impenunderlynheawofurly
heawofdiminishingmarginalreturns occurswhenemployingadditionalvariablefactorsofproduction
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increasingmarginalcosts occurswhenthe additionalcosts eachextraunitofoutputstarttorise
of
duetodiminishingmarginalreturns oncefirmsareonlywillingandabletoincreaseproduction
if
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Marginalcostreferstothecostofproducinganadditionalunitofoutoutcalculatedby
JTCDQ
theprincipleofincreasingmarginalcostsunderpinsthelawofsupplysothesuppl
curveslopesupwardsbecausehigherpricesarenated tocoverthehighermarginal
costsofproductionwhena increasesits output
prices i onlyappliesinthe5R
firm
whatarethenonpricedeterminantsofsupply
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Quantityunits futurepriceexpectations changesintechnology the offirmsinth
a a industry
competitivesupply referstothe of
production oneoranother afirmthegoodscompetefor
byone th
use thesameresources producingmore
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of
other
Jointsupply Anincrease intheproductionofoneproductautomaticallyincreasesthesupplyo
anotherproduct
financialassistancefromthegovernmenttoencourageproductionofcertainproducts
Subsidies
reducingcosts
by
£15.96
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