Isocost-isoquant analysis: theory of production: The production function: a figure known as an isoquant diagram (Figure 1). In the graph, goldsmith-hours per. Finding the conditions for cost minimization is a little bit different for Isoquant and Isocost lines. Instead of finding the optimal quantity level for a. Isoquants: An isoquant (equal quantity) is a curve that shows the combinations of certain inputs such as Labor (L) and Capital (K) that will produce a certain.

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Maximization of profit implies minimization of cost. Put differently, a cost-minimizing input bundle must satisfy two conditions:. The least cost factor combination can be determined by imposing the isoquant map on isocost line.

From the isoquant map, we can generate the total product curve of each input by holding the quantity of the other input constant. When the amount of money spent by the firm changes, the isocost line may shift but its slope remains the same.

We may now speak a few words about the slopes of isoquant and an isocost line. And isoquant must be convex to the origin.

Thus at a point of equilibrium marginal physical productivities of the two factors must be equal the ratio of their prices.


A rational firm seeks maximization of its profit. This condition makes sense: We know that the MRTS is equal to the ratio of the marginal products of the two inputs.

Isocost-isoquant analysis

Comments are not for promoting your articles or other sites. Each curve shows the alternative combinations of labour and capital that would produce isoqunt and 10 units of output, respectively. Equilibrium is attained at the point where the isoquant is tangent to the isocost line. This is picturised by his budget line called isocost line. No data is shared with Facebook unless you engage with this feature.

Least cost input is a combination anx the slope of isoquant is equal to the slope of isocost. The long-run production function of a firm involving the usage of two factors, say, capital and labour is represented by equal-product curve or isoquant. Thus, profit maximisation and cost minimisation are the two sides of the same coin. This is feature allows you to search the site. It looks for that factor combination that is on the lowest of the isocost lines.

Isocost Line The concept of isocost line is not a new one. Therefore, the only way to maximise profit is to minimise cost.

Isoquant and Isocost Lines (With Diagram) | Economics

To find the least cost combination of inputs to produce a given output, we need to construct such equal cost lines or isocost lines. Please choose which areas of our service you consent to our doing so.


The equilibrium position of the firm can also be explained in terms of the equality between MRTS and the factor price ratio. For the two production inputs labour and capital, with fixed unit costs of the inputs, the equation of the isocost line is. Ane the change in the factor prices the slope of iso cost lien will change.

Hiring more of both inputs will cost more. This is used to prevent bots and spam.

The cost function for a firm with two variable inputs

Javascript software libraries such as jQuery are loaded at endpoints on the googleapis. For the convenience of the students, we can state them as follows. A change in factor price makes changes in the slope of isocost lines as shown in the figure. To see this, consider an example. He could do so using the combination represented by points A, B or C in Fig.