Demand curves for Competitive and monopoly firms (a)A Competitive Firms (b)A Monopolists Demand curve Demand curve Price Price Demand Demand Quantity 0 Quantity of Output OutputDemand Quantity of Output (a) A Competitive Firm’s Demand Curve (b) A Monopolist’s Demand Curve 0 Price 0 Quantity of Output Price Demand Demand Curves for Competitive and Monopoly Firms