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Microeconomics relies heavily on calculating elasticities and understanding market interventions. Master these core algebraic relationships. Price Elasticity of Demand (PED)
The following formulas are essential for the IB Economics HL curriculum, based on the : 1. Microeconomics (Calculations & Elasticities) Price Elasticity of Demand (PED): Price Elasticity of Supply (PES): Income Elasticity of Demand (YED): Cross-Price Elasticity of Demand (XED): Revenue & Cost: Total Revenue ( ), Marginal Revenue ( ), Total Cost ( ), Marginal Cost ( 2. Macroeconomics (Indicators & Policies) GDP Deflator: Real GDP: Unemployment Rate: Inflation Rate (CPI): 3. International Economics Terms of Trade (ToT):
The area below the demand curve and above the market price.
Everything you actually need for Paper 3 (and those Paper 2 explainers) in one place:✅ Elasticities & Market Formulas✅ Macro Multipliers & GDP Deflators✅ International Trade & Exchange Rates✅ Theory of the Firm (HL specific)
Crucial Note: The IB syllabus emphasizes the for elasticity because it provides a consistent value regardless of whether price rises or falls. ib economics hl formula booklet repack
: Area between the line of absolute equality and the Lorenz curve. : Area under the Lorenz curve.
Microeconomics contains the highest density of mathematical calculations in Paper 3. Mastery of elasticities, government interventions, and market structures is non-negotiable. Elasticities of Demand and Supply
Marginal Revenue (MR)=ΔTRΔQMarginal Revenue (MR) equals the fraction with numerator cap delta TR and denominator cap delta cap Q end-fraction
Current Account=Balance of Trade in Goods+Balance of Trade in Services+Net Primary Income+Net Secondary IncomeCurrent Account equals Balance of Trade in Goods plus Balance of Trade in Services plus Net Primary Income plus Net Secondary Income Terms of Trade (ToT) Everything you actually need for Paper 3 (and
[ \textHDI = \sqrt[3] \textLife Expectancy Index \times \textEducation Index \times \textIncome Index ]
This article provides you with the ultimate guide to transforming the raw IB Economics HL formula booklet into a powerful, personalized study tool designed to help you ace your papers. We'll break down every formula, show you how to connect them to real-world scenarios, and give you the exact strategies to repack this resource for top marks.
IB Paper 3 mark schemes allocate explicit marks for correct formulas and step-by-step substitution, even if the final mathematical calculation contains a minor arithmetic error.
: Area above the price and below the demand curve: We'll break down every formula
These formulas quantify market welfare and the deadweight losses caused by interventions like taxes, subsidies, or price controls.
Hey everyone, I found the official IB Economics guide a bit too bloated for quick revision, so I’ve created a Formula Booklet Repack .
Understanding costs, revenues, and profit maximization rules is critical for Paper 3 data response questions. Cost Formulas (Total Fixed Cost + Total Variable Cost) Average Total Cost (ATC):
Shows an inverse relationship between unemployment and inflation.