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  2. Profit maximization - Wikipedia

    en.wikipedia.org/wiki/Profit_maximization

    Profit maximization using the total revenue and total cost curves of a perfect competitor. To obtain the profit maximizing output quantity, we start by recognizing that profit is equal to total revenue minus total cost (). Given a table of costs and revenues at each quantity, we can either compute equations or plot the data directly on a graph.

  3. Bertrand–Edgeworth model - Wikipedia

    en.wikipedia.org/wiki/Bertrand–Edgeworth_model

    In microeconomics, the Bertrand–Edgeworth model of price-setting oligopoly looks at what happens when there is a homogeneous product (i.e. consumers want to buy from the cheapest seller) where there is a limit to the output of firms which are willing and able to sell at a particular price. This differs from the Bertrand competition model ...

  4. Market power - Wikipedia

    en.wikipedia.org/wiki/Market_power

    An oligopoly may engage in collusion, either tacit or overt to exercise market power and manipulate prices to control demand and revenue for a collection of firms. A group of firms that explicitly agree to affect market price or output is called a cartel , with the organization of petroleum-exporting countries ( OPEC ) being one of the most ...

  5. Oligopoly - Wikipedia

    en.wikipedia.org/wiki/Oligopoly

    If the firms are colluding in the oligopoly, they can set the price at a high profit-maximising level. Perfect and imperfect knowledge: Oligopolies have perfect knowledge of their own cost and demand functions, but their inter-firm information may be incomplete. If firms in an oligopoly collude, information between firms then may become perfect.

  6. Lerner index - Wikipedia

    en.wikipedia.org/wiki/Lerner_Index

    A perfectly competitive firm charges P = MC, L = 0; such a firm has no market power. An oligopolist or monopolist charges P > MC, so its index is L > 0, but the extent of its markup depends on the elasticity (the price-sensitivity) of demand and strategic interaction with competing firms. The index rises to 1 if the firm has MC = 0.

  7. Perfect competition - Wikipedia

    en.wikipedia.org/wiki/Perfect_competition

    A monopolist can set a price in excess of costs, making an economic profit. The above diagram shows a monopolist (only one firm in the market) that obtains a (monopoly) economic profit. An oligopoly usually has economic profit also, but operates in a market with more than just one firm (they must share available demand at the market price).

  8. Monopolistic competition - Wikipedia

    en.wikipedia.org/wiki/Monopolistic_competition

    The difference between the company's average revenue and average cost, multiplied by the quantity sold (Qs), gives the total profit. A short-run monopolistic competition equilibrium graph has the same properties of a monopoly equilibrium graph. Long-run equilibrium of the firm under monopolistic competition.

  9. Differentiated Bertrand competition - Wikipedia

    en.wikipedia.org/wiki/Differentiated_Bertrand...

    p 1 = firm 1's price level pr unit; p 2 = firm 2's price level pr unit; b 1 = slope coefficient for how much firm 2's price affects firm 1's demand; b 2 = slope coefficient for how much firm 1's price affects firm 2's demand; q 1 =A 1-a 1 *p 1 +b 1 *p 2; q 2 =A 2-a 2 *p 2 +b 2 *p 1; The above figure presents the best response functions of the ...