A monopolist firm itself determines price under a Monopoly market. A Monopolist has sole control oversupply of its product. In this sense, the monopolist firm is a price maker, not a price taker. A Monopolist firm can control either the price or output, but not both. However, the firm cannot make decisions on the price and quantity of output to be supplied at the same time. His price and output decisions are motivated by profit maximization.
Conditions for equilibrium:
The profit-maximizing Monopolist will determine the price and quantity of the output at a point where the following two conditions are satisfied:a. Necessary condition:MC = MR
b. Sufficient condition: MC most cut MR from below
Poet of equilibrium: determination of equilibrium price and output
The aim of the monopolist is to maximize profit, therefore; he will produce that level of output in charge of that price that gives him the maximum profits. A monopolist determines the price and output at a point when he is in equilibrium. He will be in equilibrium at that price and output at his profit are the maximum.
In the above figure, the output is taken along the x-axis, and price, revenue, cost are along the y-axis. Here we observe the firm's equilibrium condition at point E. This is because at point e the firm's equilibrium conditions are satisfied.It can be seen from the diagram that till OQ output, marginal revenue is greater than marginal cost, but beyond OQ marginal revenue is less than marginal cost. At point E, both conditions for equilibrium are fulfilled. Therefore the monopolist will be in equilibrium at output OQ where marginal revenue is equal to marginal cost and the profit are the greatest. The corresponding price in the diagram is OP or AQ. It can be seen from the diagram that 'AQ' is the average revenue, BQ is the average cost, and AB is the profit per unit. Now the total profit is equal to the shaded area PABC.
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