Economics Fundamentals Cheat Sheet
This cheat sheet provides a concise overview of fundamental economic concepts, including definitions, classifications, principles, theories, and practical applications, designed for quick reference and learning.
Core Principles
- Economics is the study of how individuals and societies make choices to satisfy unlimited wants with limited resources.
- Microeconomics focuses on individual economic agents (consumers, firms), while macroeconomics examines the economy as a whole.
- Scarcity is the fundamental economic problem, leading to choices and opportunity costs.
- Supply and demand are the core forces determining prices and quantities in markets.
- Economic theories and models simplify reality to explain economic phenomena and guide policy.
- Understanding national income, inflation, and fiscal/monetary policies is crucial for economic stability and growth.
Formulas
- $GNP = C + I + G + (X - M)$
- $APC = C / Y$
- $MPC = \Delta C / \Delta Y$
- $ep = (\% \Delta Q) / (\% \Delta P)$
- $e_y = (\% \Delta Q) / (\% \Delta Y)$
- $e_c = (\% \Delta Q_x) / (\% \Delta P_y)$
- $MR = MC$
- $Inflation = (Index Harga Periode Sekarang - Index Harga Periode Lalu) / Index Harga Periode Lalu$
- $Pertumbuhan Ekonomi = ((GNP_{t} - GNP_{t-1}) / GNP_{t-1}) \times 100\%$
- $Pendapatan Perkapita = GNP / Jumlah Penduduk$
Myth vs Reality
- Economic growth always leads to increased happiness and well-being for everyone.: While economic growth can improve living standards, its benefits are not always evenly distributed, and factors like environmental sustainability and social equity are also crucial for overall well-being.
- Government intervention in the economy is always detrimental.: Government intervention can be necessary to correct market failures, provide public goods, and stabilize the economy, though the extent and type of intervention are subjects of ongoing debate.
- All businesses aim solely to maximize profits at any cost.: While profit is a primary motive, businesses also consider factors like market share, customer satisfaction, social responsibility, and long-term sustainability.
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