The world supply curve is considered perfectly elastic.
The difference between individual supply curve and the market supply curve is tat individual supply curve is like a firm. To be able to get the market supply curve you have to have the individual supply curve.
A firm's short run supply curve
AnswerFor a perfectly competitive firm with no market control, the marginal revenue curve is a horizontal line. Because a perfectly competitive firm is a price taker and faces a horizontal demand curve, its marginal revenue curve is also horizontal and coincides with its average revenue (and demand) curve. Yes - what you must remember is that a firm's demand curve in perfect competition is its average revenue curve. Average revenue = price x quantity / quantity = price. The demand curve shows the quantity demanded at varying prices and this is exactly what the average revenue curve will do.Because there are so many sellers in the market, no one firm has enough market power to influence price (if a firm tried to raise price consumers would move to different suppliers; nobody would buy the good), therefore price is determined by industry supply and demand, and a firm can produce any quantity at this price . This means that the firm faces a horizontal average revenue (demand curve) and if average revenue is constant, this means total revenue is increasing at a constant rate, and therefore marginal revenue is constant as well.
Horizontal.
The world supply curve is considered perfectly elastic.
The individual supply curve is the supply curve of a single firm producing output. Now say there are X individual producers there at any price P* the total available output is the output of all X producers ( a horizontal summation) this total of each individual supply curve gives the market supply curve. Put it simply all firms sell their output in the market.
A perfectly competitive firm's supply curve is that portion of its marginal cost curve that lies above the minimum of the average variable cost curve.
The difference between individual supply curve and the market supply curve is tat individual supply curve is like a firm. To be able to get the market supply curve you have to have the individual supply curve.
A firm's short run supply curve
AnswerFor a perfectly competitive firm with no market control, the marginal revenue curve is a horizontal line. Because a perfectly competitive firm is a price taker and faces a horizontal demand curve, its marginal revenue curve is also horizontal and coincides with its average revenue (and demand) curve. Yes - what you must remember is that a firm's demand curve in perfect competition is its average revenue curve. Average revenue = price x quantity / quantity = price. The demand curve shows the quantity demanded at varying prices and this is exactly what the average revenue curve will do.Because there are so many sellers in the market, no one firm has enough market power to influence price (if a firm tried to raise price consumers would move to different suppliers; nobody would buy the good), therefore price is determined by industry supply and demand, and a firm can produce any quantity at this price . This means that the firm faces a horizontal average revenue (demand curve) and if average revenue is constant, this means total revenue is increasing at a constant rate, and therefore marginal revenue is constant as well.
Horizontal.
A perfectly competitive firm's supply curve is that portion of its' marginal cost curve that lies above the minimum of the average variable cost curve. A perfectly competitive firm maximizes profit by producing the quantity of output that equates price and marginal cost. As such, the firm moves along it's marginal cost curve in response to alternative prices. Because the marginal cost curve is positively sloped due to the law of diminishing marginal returns, the firm's supply curve is also positively sloped.
if the MC=Price, the firm got the maximum profit. that's what they want.
Set MC=AVC and solve for the values that a firm will produce at. Once you've found these values, set price = MC(S(p)) and solve for supply in terms of quantity.
Marginal cost curve above the average variable cost curve, is the same as the short run supply curve. In perfect competition, MC=Price. It follows that production will be at that point. Hence the supply curve is the same as that part of the MC curve which is above AVC, where the firm can cover its variable cost....this is better than shutting down.
Because the monopolist's supply decision cannot be set out independently of demand. since supply curve tells us the quantity that a firm chooses to supply at any given price and on the other hand, a monopoly firm is a price maker; the firrm sets the price and at the same time it chooses the quantity to supply. The market demand curve tells us how much the monopolist will supply.