Notes on Isoquants: Meaning, Properties and Ridge Lines

In an uneconomic region, as marginal product of an input becomes either zero or negative, the question of input substitution does not arise. Production in such region is, for obvious reasons, unprofitable or infeasible. With the help of Isoquant diagram, we can draw the difference between returns to scale and returns to factor. Returns to scale implies that output is increased as all the inputs are increased in the same proportion.

  1. (ii) At point of tangency i.e., iso-quant curve must be convex to the origin or MRTSLk must be falling.
  2. This graph is used as a metric for the influence that the inputs have on the level of output or production that can be obtained.
  3. In this example, we have one isocost and three isoquants.
  4. We start by studying how to calculate it, then move on to use it in order to correctly draw isoquant curves and, finally, we analyse the MRTS for various sorts of isoquants.
  5. Each iso-cost curve represents the different combinations of two inputs that a firm can buy for a given sum of money at the given price of each input.

Since, (∆K/∆LK) is the slope of an isoquant (note the negative sign), the MRTS is given by the slope of an isoquant. And, MRTS is equal to the ratio of marginal product of labour (MPL) to the marginal product of capital (MPK). This property is illustrated in Figure 12.5 “Convex preferences”.

In short, the producer is producing given amount of output with least cost combination of factors. The substitution between the two factors is technically possible. That is, production function is of ‘variable proportion’ type rather than fixed proportion.

In other words, it is preferred to the indifference curve. Convex preferences mean that a consumer prefers a mix to any two equally valuable extremes. Thus, if the consumer difference between isoquant and indifference curve likes black coffee and also likes drinking milk, then the consumer prefers some of each—not necessarily mixed—to only drinking coffee or only drinking milk.

Properties of Iso-Product Curves:

An isoquant is analogous to an indifference curve in more than one way. A nonconvex isoquant is prone to produce large and discontinuous changes in the price minimizing input mix in response to price changes. Consider for example the case where the isoquant is globally nonconvex, and the isocost curve is linear.

If the two inputs are perfect substitutes, the resulting isoquant map generated is represented in fig. A; with a given level of production Q3, input X can be replaced by input Y at an unchanging rate. The perfect substitute inputs do not experience decreasing marginal rates of return when they are substituted for each other in the production function. An indifference curve is a tool used in economics and business.

Difference between Iso-quant Curve and Indifference curves

If it produced at say 13 K and 48 Labour, it would only be able to produce a TPP of 3,500. In this example, a unit of labour and capital cost £6,666 each. However, at a combination of 9 Labour, employing an extra worker enables a saving of only 2 capital. Therefore, the more that workers are employed, there is diminishing rate at which you can substitute the other factor.

Opportunity CostsThe difference between the chosen plan of action and the next best plan is known as the opportunity cost. It’s essentially the cost of the next best alternative that has been forgiven. It is used in economics to describe the point where individuals have https://1investing.in/ no particular preference for either one good or another based on their relative quantities. Therefore, along an IQ, the output remains constant but values of L and K vary. Iso-quant curve gives information regarding the economic and uneconomic region of production.

However, choice G of six books and 48 doughnuts is on lower indifference curve Ul than choice B of three books and 84 doughnuts, which is on the indifference curve Um. In the business world, an isoquant, or isoquant curve, is a curved line that shows input combinations leading to the same level of output while technology is held constant. Isoquants can be compared to isobars in meteorology, which are lines that connect points with the same atmospheric pressure at a given time.

Why is an Isoquant curve convex to the origin?

An isoquant curve or isoquant graph is a line connecting points, representing a combination of labor and capital input, that produce the same level of output, given the technology. The concept of an isoquant is usually used in the context of profit maximization. A related concept is that of indifference curves that are used in the context of consumer choice theory.

This property falls in line with the principle of the Marginal Rate of Technical Substitution (MRTS). As an example, the same level of output could be achieved by a company when capital inputs increase, but labor inputs decrease. Firstly, in the indifference curve technique, utility cannot be measured at all. In the case of an isoquant, the product can be exactly difference between indifference curve and isoquant measured in physical units. Secondly, in the case of indifference curves, we can explain about higher or lower levels of utility.

A household of isoquants may be represented by an isoquant map, a graph combining a variety of isoquants, each representing a unique quantity of output. A decline in MRTS along an isoquant for producing the same stage of output is known as the diminishing marginal price of substitution. If the agency hires another unit of labor and moves from level to , the agency can cut back its capital by three models but stays on the same isoquant, and the MRTS is 3. As we know, an isoquant describes all combinations of inputs that yield the same level of output.

While an indifference curve mapping helps to solve the utility-maximizing problem of consumers, the isoquant mapping deals with the cost-minimization and profit and output maximisation problem of producers. Indifference curves further differ to isoquants, in that they cannot offer a precise measurement of utility, only how it is relevant to a baseline. Whereas, from an isoquant, the product can be measured accurately in physical units, and it is known by exactly how much isoquant 1 exceeds isoquant 2. An isoquant curve is a concave-shaped line on a graph, used in the study of microeconomics, that charts all the factors, or inputs, that produce a specified level of output.

Difference between Indifference Curve and Iso-Quant Curve:

The desk further shows that because the producer makes use of more of 1 factor enter, labour within the desk, it reduces using other issue. For example, transferring from mixture A to B, labour will increase by one unit while capital decline by 15 items or substituting 15 items of capital by one extra unit of labour. An isoquant curve is the locus of different combinations of inputs that can produce the same level of output, given the technology. An indifference curve, on the other hand, is the locus of different combinations of goods that gives the consumer the same level of satisfaction/utility, given consumer preferences. 11 at point B, the marginal rate of technical substitution is AS/SB, t point G, it is BT/TG and at H, it is GR/RH. The isoquant AH reveals that as the units of labour are successively increased into the factor- combination to produce 100 units of good X, the reduction in the units of capital becomes smaller and smaller.

This sounds more reasonable if you think of the consumer’s choices on a monthly basis. Watch the clip from this video carefully to see examples of indifference curves and what makes them useful. Each point on the indifference curves represents the same level of satisfaction. People cannot really put a numerical value on their level of satisfaction.

A higher iso-product curve represents a higher level of output. 2 we have family iso-product curves, each representing a particular level of output. Both isocosts and isoquants are curves plotted on a graph. Used by producers and manufacturers, they display the best interplay of two factors that will result in the maximum output at minimum cost.

The MRTS reflects the give-and-take between elements, such as capital and labor, that permit a agency to maintain a constant output. MRTS differs from the marginal rate of substitution (MRS)because MRTS is targeted on producer equilibrium and MRS is concentrated on shopper equilibrium. It refers to those different combinations of two factors that a firm can obtain at the same cost.

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