ECON101 Lecture Notes - Lecture 7: Isocost, Isoquant, Marginal Cost

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scarletpanda765

10 Aug 2016

School

University of Waterloo

Department

Economics

Course

ECON101

Professor

Emmanuel Carvahlo

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ECON101 Full Course Notes

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Firms plan in the long run and operate in the short run. That means that decisions made in the long run determine the position the firm will occupy in the short run. When a firm is planning to produce a new product, it faces a long run situation. Reason for this is because it can select and alter all factors of production. Once the investment is made and the firm starts to produce the product, it confronts the short run situation because some of the factors of production become fixed. The firm is provided with three options with respect to scale/size of operation/plant that it can employ to produce output. If the firm believes that the demand for its product is going to remain stable it will operate using small scale plant: what the firm does depends on expected demand.

Related Questions

Consider a firm whose technology is given by the production function: y = f (K,L) = (N+1)L + 2√K. Assume that input prices for labour, L, and capital, K, are w = 1 and r = 2 respectively. a)Find the firm’s short run total cost function assuming the firm cannot hire more workers nor fire its only worker, i.e. L = 1 is fixed.

b)Find the firm’s short run marginal cost, average variable cost and average fixed cost. Draw the three of them in the same graph. What is the short-run supply of the firm?

c)Find the firm’s long run total cost function, i.e. when all factors are variable.

d)Find the firm’s long run marginal cost and average cost. Draw them in the same graph. What is the long-run supply of the firm?

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11. [3 Marks] Assume no change in the LRATC.? All firms in a perfectly competitive market have access to the same technology and input prices. Production entails a $1000 per period fixed cost. A firm sells 1000 units a price of $10, incurring an average of $8 per unit in variable costs. A. The firm must increase output to increase short-run profits. B. The firm must decrease output to increase short-run profits. C. Assuming this firm is maximizing short run profits, it will produce less in future periods as the market price will decrease in the long run. D. Assuming this firm is maximizing short run profits, it will produce more in future periods as the market price will increase in the long run. E. Assuming this firm is maximizing short run profits, it will continue to produce 1000 units in the long run.

Marginal Cost, Revenue, and Pure Competition Assignment Worksheet
Directions
This assignment deals with the recognition and application of pure competition cost and revenue information that is graphically presented. Use the graph below to answer the following questions.
Microeconomic Problem

1. How do you know that the firm represented in the graph above is a purely competitive firm?

2. To maximize profits, this firm will produce at what output level(one letter)?

3. Explain why this MR=MC position is the profit-maximizing position for any firm.

4. What is the product price (one letter)?

5. What is this firm's average revenue (one letter)?

6. At profit-maximizing output, what is this firm's average variable cost (one letter)?

7. At profit-maximizing output, what four letters indicate:

Total revenue? (Remember, four letters' a rectangle.)

Total cost?

Total variable cost?

Total fixed cost?

Total economic profit?

8. If price falls below what point, this firm will not operate in the short run? (No letter needed, just an explanation.)

9. What will happen to this firm's price, output, and economic profit in the long run? Why?

10. Where will the price settle in the long run? Remember, all purely competitive firms are theoretically doomed to make an only normal profit in the long run. (Again, no letter answer, just an explanation.)

11. Why is the long-run equilibrium position of a purely competitive firm productively and allocatively efficient?

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ECON101 Lecture Notes - Lecture 7: Isocost, Isoquant, Marginal Cost

ECON101 Full Course Notes

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