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Ch. 4 - Demand Sect. 1 - Understanding Demand Demand - The desire to own something and the ability to pay for it Law of Demand - The lower the price of a good, the higher the quantity demanded - the higher the price, the lower the quantity demanded Demand Curve - A graph that represents the law of demand for a given good or service
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0 Quantity Price $ 1 2 345 1 2 3 4 5
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0 Quantity Price $ 1 2 345 1 2 3 4 5 Demand Curve
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Law of Demand
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Sect. 2 - Shifts in the Demand Curve Ceteris paribus - Latin for “all other things held constant” - a demand curve is accurate only as long as this is true - Increase in demand - shifts demand curve to the right - Decrease in demand - shifts demand curve to the left
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0 Quantity Price $ 1 2 345 1 2 3 4 5 Increase in Demand
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0 Quantity Price $ 1 2 345 1 2 3 4 5 Decrease in Demand
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Sect. 2 - Shifts in the Demand Curve Ceteris paribus - Latin for “all other things held constant” - a demand curve is accurate only as long as this is true - Increase in demand - shifts demand curve to the right - Decrease in demand - shifts demand curve to the left Causes of shift in demand curve: Change in Income - Increased income increases demand for “normal goods” - decreases demand for “inferior goods”
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Sect. 2 - Shifts in the Demand Curve Ceteris paribus - Latin for “all other things held constant” - a demand curve is accurate only as long as this is true - Increase in demand - shifts demand curve to the right - Decrease in demand - shifts demand curve to the left Causes of shift in demand curve: Change in income - Increased income increases demand for “normal goods” - decreases demand for “inferior goods”
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13 Quick Check: If your income increases, your demand for inferior goods will _____________? If your income decreases, your demand for normal goods will _____________? decrease
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Change in population / demographics - Increase or decrease will shift demand curve Consumer expectations - E xpectations about the future can affect our demand for certain goods Example: Hurricane is coming Change in tastes and advertising - Fads and promoted goods
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0 Quantity Price $ 1 2 345 1 2 3 4 5 6 Demand Curve for Fad Items
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0 Quantity Price $ 1 2 345 1 2 3 4 5 6 Demand Curve for Fad Items
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Change in population / demographics - Increase or decrease will shift demand curve Consumer expectations - E xpectations about the future can affect our demand for certain goods Example: Hurricane is coming Change in tastes and advertising - Fads and promoted goods
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Change in Demand Curve
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Substitute Goods - Goods that are used in place of another good - as the price of a good increases consumers buy less of it - so the demand for its substitute increases
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0 Quantity Price $ 123 1 2 3 4 5 A B 4 Decrease in Quantity Demanded for Butter Quantity Price $ 1 2 3 1 2 3 4 5 4 Increase in Demand for Margarine 0
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Compliments - Two goods that are bought and used together - as the price of a good increases consumers buy less of it - so the demand for its compliment also decreases
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0 Quantity Price $ 123 1 2 3 4 5 A B 4 Decrease in Quantity Demanded for Hotdogs Quantity Price $ 1 2 3 1 2 3 4 5 4 Decrease in Demand for Buns 0
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25 Quick Check: If the price of a good increases, the demand for a substitute good will _____________? If the price of a good decreases, the demand for a compliment good will _____________? increase
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Section 3 - Elasticity of Demand Elasticity of Demand - A measure of how consumers respond to price changes Elastic - demand is very sensitive to price change small change in price = large change in quantity demanded Inelastic - demand is not very sensitive to price change large change in price = small change in quantity demanded
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0 Quantity Price $ 1 2 345 1 2 3 4 5 Elastic or Inelastic? Elastic - Small change in price = large change in quantity demanded
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0 Quantity Price $ 1 2 345 1 2 3 4 5 Elastic or Inelastic? Inelastic - Large change in price = small change in quantity demanded
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Section 3 - Elasticity of Demand Elasticity of Demand - A measure of how consumers respond to price changes Elastic - demand is very sensitive to price change small change in price = large change in quantity demanded Inelastic - demand is not very sensitive to price change large change in price = small change in quantity demanded Calculating Elasticity of Demand - Percentage change in quantity demanded Percentage change in price Greater than 1 = elastic Less than 1 = inelastic Elasticity of 1 = Unitary Elastic Elasticity =
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0 Quantity Price $ 1 2 345 1 2 3 4 5 % change in quantity demanded - % change in price - = 1.5 (elastic) 50 33
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0 Quantity Price $ 1 2 345 1 2 3 4 5 % change in quantity demanded - % change in price - = 4 (elastic) 100 25
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0 Quantity Price $ 1 2 345 1 2 3 4 5 % change in quantity demanded - % change in price - =.4 (inelastic) 20 50
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0 Quantity Price $ 1 2 345 1 2 3 4 5 % change in quantity demanded - % change in price - =.75 (inelastic) 25 33
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Section 3 - Elasticity of Demand Elasticity of Demand - A measure of how consumers respond to price changes Elastic - demand is very sensitive to price change small change in price = large change in quantity demanded Inelastic - demand is not very sensitive to price change large change in price = small change in quantity demanded Calculating Elasticity of Demand - Percentage change in quantity demanded Percentage change in price Greater than 1 = elastic Less than 1 = inelastic Elasticity of 1 = Unitary Elastic Elasticity =
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Factors Affecting Elasticity - Availability of Substitutes - Less substitutes = less elastic demand More substitutes = more elastic demand Luxury vs. Necessity - Pepsi / Coke vs. prescription medicine
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Elasticity
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Ch. 5 - Supply Sect. 1 - Understanding Supply Supply - The amount of goods or services available Law of Supply - Producers offer more of a good as its price increases and less as its price falls Market entry - Rising prices draw new firms into a market and add to the quantity supplied of a good
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Supply Curve - A graph that represents the law of supply for a good or service
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0 Quantity Price $ 1 2 345 1 2 3 4 5
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0 Quantity Price $ 1 2 345 1 2 3 4 5 Supply Curve
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Supply Curve - A graph that represents the law of supply for a good or service
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Supply Curve
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Supply Curve - A graph that represents the law of supply for a good or service Elasticity of Supply - How firms respond to changes in the price of a good - Supply is inelastic in the short term - More elastic in the long term
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Sect. 2 - Costs of Production Marginal Product of Labor - The change in output from hiring one more worker - measures the change in output at the margin Increasing Marginal Returns - When the marginal product of labor increases as the number of workers increases Diminishing Marginal Returns - When the marginal product of labor decreases as the number of workers increases
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Sect. 2 - Costs of Production Marginal Product of Labor - The change in output from hiring one more worker - measures the change in output at the margin Increasing Marginal Returns - When the marginal product of labor increases as the number of workers increases Diminishing Marginal Returns - When the marginal product of labor decreases as the number of workers increases
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Fixed Costs - A cost that does not change no matter how much of a good is produced. - cost of the building, machinery, rent, property taxes Variable Costs - Costs that rise or fall depending on the quantity produced - the cost of raw materials, labor, electricity Total Cost - Fixed costs + variable costs
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Production Costs
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Fixed Costs - A cost that does not change no matter how much of a good is produced. - cost of the building, machinery, rent, property taxes Variable Costs - Costs that rise or fall depending on the quantity produced - the cost of raw materials, labor, electricity Total Cost - Fixed costs + variable costs
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Marginal Cost - The additional cost of producing one more unit Marginal Revenue - The additional income from selling one more unit - Does not change because each unit sells for the same price Total Revenue - The price of each unit X total units sold Output - The best level of output is where marginal revenue is equal to marginal cost
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(marginal price) (new marginal price)
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Optimum Output
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Oil Changes per Hour Fixed Cost Variable Cost Total Cost Marginal Cost Marginal Revenue Total Revenue Profit 0$35$0$35$0$20$0$–35 1$35$11$46$11$20 $–26 2$35$20$55$20 3$35$24$59$20 4$35$31$66$20 5$35$40$75$20 6$35$51$86$20 7$35$64$99$20 8$35$82$117$20 9$35$107$142$20 10$35$137$172$20
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Oil Changes per Hour Fixed Cost Variable Cost Total Cost Marginal Cost Marginal Revenue Total Revenue Profit 0$35$0$35$0$20$0$–35 1$35$11$46$11$20 $–26 2$35$20$559$20 3$35$24$594$20 4$35$31$667$20 5$35$40$759$20 6$35$51$8611$20 7$35$64$9913$20 8$35$82$11718$20 9$35$107$14225$20 10$35$137$17230$20
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Oil Changes per Hour Fixed Cost Variable Cost Total Cost Marginal Cost Marginal Revenue Total Revenue Profit 0$35$0$35$0$20$0$–35 1$35$11$46$11$20 $–26 2$35$20$559$2040 3$35$24$594$2060 4$35$31$667$2080 5$35$40$759$20100 6$35$51$8611$20120 7$35$64$9913$20140 8$35$82$11718$20160 9$35$107$14225$20180 10$35$137$17230$20200
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Oil Changes per Hour Fixed Cost Variable Cost Total Cost Marginal Cost Marginal Revenue Total Revenue Profit 0$35$0$35$0$20$0$–35 1$35$11$46$11$20 $–26 2$35$20$559$2040-15 3$35$24$594$20601 4$35$31$667$208014 5$35$40$759$2010025 6$35$51$8611$2012034 7$35$64$9913$2014041 8$35$82$11718$2016043 9$35$107$14225$2018038 10$35$137$17230$2020028
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Marginal Cost - The additional cost of producing one more unit Marginal Revenue - The additional income from selling one more unit - Does not change because each unit sells for the same price Total Revenue - The price of each unit X total units sold Output - The best level of output is where marginal revenue is equal to marginal cost
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Sect. 3 - Changes in Supply Effect of Rising Costs - A rise in the cost of inputs will cause a fall in supply because the good is more expensive to produce - a fall in the cost of an input will cause an increase in supply
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0 Quantity Price $ 1 2 345 1 2 3 4 5 Decrease in Supply
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0 Quantity Price $ 1 2 345 1 2 3 4 5 Increase in Supply
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Sect. 3 - Changes in Supply Effect of Rising Costs - A rise in the cost of inputs will cause a fall in supply because the good is more expensive to produce - a fall in the cost of an input will cause an increase in supply Technology - Advances in technology can lower production costs - causes a rightward shift in the supply curve
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Sect. 3 - Changes in Supply Effect of Rising Costs - A rise in the cost of inputs will cause a fall in supply because the good is more expensive to produce - a fall in the cost of an input will cause an increase in supply Technology - Advances in technology can lower production costs - causes a rightward shift in the supply curve Subsidy - A government payment that supports a business or market - A payment to increase or decrease production
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Excise Tax - A tax on the production or sale of a good - Increases cost - reduces supply Regulation - Government intervention in a market that increases production cost - reduces supply Where Firms Produce - Transportation costs - cost to transport raw materials vs. cost to transport finished good
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Ch. 6 - Prices Sect. 1 - Combining Supply and Demand Equilibrium - The point at which the demand for a good is equal to supply
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0 Quantity Price $ 1 2 345 1 2 3 4 5 Demand Supply Equilibrium
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Ch. 6 - Prices Sect. 1 - Combining Supply and Demand Equilibrium - The point at which the demand for a good is equal to supply Disequilibrium - When quantity supplied is not equal to quantity demanded Shortage - When quantity demanded is greater than quantity supplied - solved by raising price and increasing production
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0 Quantity Price $ 1 2 345 1 2 3 4 5 Demand Supply Shortage
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Ch. 6 - Prices Sect. 1 - Combining Supply and Demand Equilibrium - The point at which the demand for a good is equal to supply Disequilibrium - When quantity supplied is not equal to quantity demanded Shortage - When quantity demanded is greater than quantity supplied - solved by raising price and increasing production Surplus - When quantity supplied is greater than quantity demanded - solved by lowering price and decreasing production
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0 Quantity Price $ 1 2 345 1 2 3 4 5 Demand Supply Surplus
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Ch. 6 - Prices Sect. 1 - Combining Supply and Demand Equilibrium - The point at which the demand for a good is equal to supply Disequilibrium - When quantity supplied is not equal to quantity demanded Shortage - When quantity demanded is greater than quantity supplied - solved by raising price and increasing production Surplus - When quantity supplied is greater than quantity demanded - solved by lowering price and decreasing production
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Price Ceiling - Maximum price that can legally be charged for a good or service
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0 Quantity Price $ 1 2 345 1 2 3 4 5 Shortage Demand Supply Price Ceiling
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Price Ceiling - Maximum price that can legally be charged for a good or service Price Floor - Minimum price that must be paid for a good or service
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0 Quantity Price $ 1 2 345 1 2 3 4 5 Surplus Demand Supply Price Floor
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0 Quantity Price $ 1 2 345 1 2 3 4 5 Shortage Demand Supply Price Ceiling
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0 Quantity Price $ 1 2 345 1 2 3 4 5 Surplus Demand Supply Price Floor
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0 Quantity Price $ 1 2 345 1 2 3 4 5 Demand Supply
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0 Quantity Price $ 1 2 345 1 2 3 4 5 Demand Supply
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Price Ceiling - Maximum price that can legally be charged for a good or service Price Floor - Minimum price that must be paid for a good or service Minimum Wage - Minimum price that an employer can pay a worker for one hour of labor - set by federal government
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0 Quantity of Workers Wage $ 10 20 304050 2 4 $6.00 $8.00 10 Demand for Labor Supply of Labor Minimum Wage
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0 Quantity of Workers Wage $ 10 20 304050 2 4 $6.00 $8.00 10 Demand for Labor Supply of Labor
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Minimum Wage
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Price Ceiling - Maximum price that can legally be charged for a good or service Price Floor - Minimum price that must be paid for a good or service Minimum Wage - Minimum price that an employer can pay a worker for one hour of labor - set by federal government Sect. 2 - Changes in Market Equilibrium Increase in Supply - A shift to the right in the supply curve will change the equilibrium price and quantity
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Quantity Price $ 1 2 345 1 2 3 4 5 0 New Equilibrium X Demand Supply
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Digital Cameras
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Price Ceiling - Maximum price that can legally be charged for a good or service Price Floor - Minimum price that must be paid for a good or service Minimum Wage - Minimum price that an employer can pay a worker for one hour of labor - set by federal government Sect. 2 - Changes in Market Equilibrium Increase in Supply - A shift to the right in the supply curve will change the equilibrium price and quantity
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Supply Curve Shift
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Decrease in Supply - When factors cause a supply curve to shift to the left - An increase in the costs of resources to produce a good - An increase in labor costs
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0 Quantity Price $ 1 2 345 1 2 3 4 5 New Equilibrium X Demand Supply
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Decrease in Supply - When factors cause a supply curve to shift to the left - An increase in the costs of resources to produce a good - An increase in labor costs Increase in Demand - Shift in demand curve to the right - Leads to a shortage / new equilibrium price
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0 Quantity Price $ 1 2 345 1 2 3 4 5 New Equilibrium X Demand Supply
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Decrease in Supply - When factors cause a supply curve to shift to the left - An increase in the costs of resources to produce a good - An increase in labor costs Increase in Demand - Shift in demand curve to the right - Leads to a shortage / new equilibrium price Decrease in Demand - Shift in demand curve to the left - Leads to a surplus / new equilibrium price
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0 Quantity Price $ 1 2 345 1 2 3 4 5 New Equilibrium X Demand Supply
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Decrease in Supply - When factors cause a supply curve to shift to the left - An increase in the costs of resources to produce a good - An increase in labor costs Increase in Demand - Shift in demand curve to the right - Leads to a shortage / new equilibrium price Decrease in Demand - Shift in demand curve to the left - Leads to a surplus / new equilibrium price
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Draw and label graphs for each including demand & supply curves, shift arrows, equilibrium points, and if price and quantity increase or decrease. 1) Increase in demand 2) Decrease in demand 3) Increase in supply 4) Decrease in supply
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Demand Curve Shift
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Sect. 3 - The Role of Price Price as an Incentive - Financial reward motivates both consumers and producers - rising prices for producers / falling prices for consumers Rationing - Response to a shortage - forced decrease in demand - Resources used where most needed Black Market - When producers and consumers conduct business outside of Govt. control of price or quantity - Illegal - throws the system out of balance
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The End
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