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By Edcent
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Get instant insights and key takeaways from this YouTube video by Edcent.
Demand (Permintaan)
π Demand is the quantity of goods consumers are willing and able to purchase, driven by purchasing power.
βοΈ The Law of Demand states that if the price ($P$) increases, the quantity demanded () decreases, resulting in a negative slope on the demand curve.
π Price changes cause movements along the existing demand curve, whereas changes in other factors cause the entire curve to shift.
Factors Affecting Demand
π Substitutes (Barang Substitusi): If the price of a substitute good (e.g., corn) increases, the demand curve for the primary good (e.g., rice) shifts right (increases) as consumers seek alternatives.
β Complements (Barang Komplementer): If the price of a complementary good (e.g., sugar) increases, the demand curve for the associated good (e.g., tea) shifts left (decreases) because the complementary item is now more expensive.
π Income and Goods Type: For normal goods (e.g., cars), an income increase shifts demand right; for inferior goods (e.g., used items), an income increase shifts demand left.
π Other Demand Shifters: An increase in taste/preference, income distribution equality, or population size will cause the demand curve to shift to the right (increase).
Supply (Penawaran)
π° The Law of Supply dictates that as the price ($P$) increases, the quantity supplied () also increases, resulting in a positive slope on the supply curve.
βοΈ For supply, an increase in supply shifts the curve to the right and down, while a decrease shifts it to the left and up.
Factors Affecting Supply
π² Substitute Goods (in Production): If the price of a substitute good (e.g., corn) increases, producers shift production away from rice, causing the rice supply curve to shift left and up (decrease).
π§ͺ Technology: An increase in technology leads to more efficient production, causing the supply curve to shift right and down (increase).
π Cost of Production: An increase in production costs (e.g., wages, rent) causes the supply curve to shift left and up (decrease) as profitability falls.
Market Equilibrium (Keseimbangan Pasar)
π€ Market Equilibrium is established where the quantity supplied () equals the quantity demanded ().
π The intersection of the upward-sloping supply curve and the downward-sloping demand curve determines the **equilibrium price () and equilibrium quantity ()** agreed upon by buyers and sellers.
Key Points & Insights
β‘οΈ Movement vs. Shift: Only the price of the good itself causes movement *along* one curve; all other factors (substitutes, complements, income, cost, technology, etc.) cause the entire curve to shift.
β‘οΈ Supply Shift Direction: When supply increases (due to better tech or lower cost), the curve shifts right and down; when supply decreases, it shifts left and up.
β‘οΈ Demand Shift Direction: When demand increases (due to preference or income for normal goods), the curve shifts right and up; when demand decreases, it shifts left and down.
πΈ Video summarized with SummaryTube.com on Nov 07, 2025, 06:39 UTC
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Full video URL: youtube.com/watch?v=VMiJ0fRytE8
Duration: 57:40
Get instant insights and key takeaways from this YouTube video by Edcent.
Demand (Permintaan)
π Demand is the quantity of goods consumers are willing and able to purchase, driven by purchasing power.
βοΈ The Law of Demand states that if the price ($P$) increases, the quantity demanded () decreases, resulting in a negative slope on the demand curve.
π Price changes cause movements along the existing demand curve, whereas changes in other factors cause the entire curve to shift.
Factors Affecting Demand
π Substitutes (Barang Substitusi): If the price of a substitute good (e.g., corn) increases, the demand curve for the primary good (e.g., rice) shifts right (increases) as consumers seek alternatives.
β Complements (Barang Komplementer): If the price of a complementary good (e.g., sugar) increases, the demand curve for the associated good (e.g., tea) shifts left (decreases) because the complementary item is now more expensive.
π Income and Goods Type: For normal goods (e.g., cars), an income increase shifts demand right; for inferior goods (e.g., used items), an income increase shifts demand left.
π Other Demand Shifters: An increase in taste/preference, income distribution equality, or population size will cause the demand curve to shift to the right (increase).
Supply (Penawaran)
π° The Law of Supply dictates that as the price ($P$) increases, the quantity supplied () also increases, resulting in a positive slope on the supply curve.
βοΈ For supply, an increase in supply shifts the curve to the right and down, while a decrease shifts it to the left and up.
Factors Affecting Supply
π² Substitute Goods (in Production): If the price of a substitute good (e.g., corn) increases, producers shift production away from rice, causing the rice supply curve to shift left and up (decrease).
π§ͺ Technology: An increase in technology leads to more efficient production, causing the supply curve to shift right and down (increase).
π Cost of Production: An increase in production costs (e.g., wages, rent) causes the supply curve to shift left and up (decrease) as profitability falls.
Market Equilibrium (Keseimbangan Pasar)
π€ Market Equilibrium is established where the quantity supplied () equals the quantity demanded ().
π The intersection of the upward-sloping supply curve and the downward-sloping demand curve determines the **equilibrium price () and equilibrium quantity ()** agreed upon by buyers and sellers.
Key Points & Insights
β‘οΈ Movement vs. Shift: Only the price of the good itself causes movement *along* one curve; all other factors (substitutes, complements, income, cost, technology, etc.) cause the entire curve to shift.
β‘οΈ Supply Shift Direction: When supply increases (due to better tech or lower cost), the curve shifts right and down; when supply decreases, it shifts left and up.
β‘οΈ Demand Shift Direction: When demand increases (due to preference or income for normal goods), the curve shifts right and up; when demand decreases, it shifts left and down.
πΈ Video summarized with SummaryTube.com on Nov 07, 2025, 06:39 UTC
Find relevant products on Amazon related to this video
As an Amazon Associate, we earn from qualifying purchases

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