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Imperfect substitutes, also known as close substitutes, have a lesser level of substitutability, and therefore exhibit variable marginal rates of substitution along the consumer indifference curve. The consumption points on the curve offer the same level of utility as before, but compensation depends on the starting point of the substitution.
The concept of the elasticity of substitution was developed by two different economists, each with their own focus. One of these economists was John Hicks, who defined elasticity of substitution as the change in percentage in the relative number of factors of production used, given a particular change in percentage in relative prices or marginal products.
Cross elasticity of demand of product B with respect to product A (η BA): = / / = > implies two goods are substitutes.Consumers purchase more B when the price of A increases. Example: the cross elasticity of demand of butter with respect to margarine is 0.81, so 1% increase in the price of margarine will increase the demand for butter by 0.81
In economics, the marginal rate of substitution (MRS) is the rate at which a consumer can give up some amount of one good in exchange for another good while maintaining the same level of utility. At equilibrium consumption levels (assuming no externalities), marginal rates of substitution are identical.
The problem arises from the fact that economic theory predicts that any profit-maximizing firm will set its prices at a level where demand for its product is elastic. Therefore, when a monopolist sets its prices at a monopoly level it may happen that two products appear to be close substitutes whereas at competitive prices they are not. In ...
Constant elasticity of substitution (CES) is a common specification of many production functions and utility functions in neoclassical economics.CES holds that the ability to substitute one input factor with another (for example labour with capital) to maintain the same level of production stays constant over different production levels.
The general definition of the elasticity of X with respect to Y is = % % , which reduces to = for infinitesimal changes and differentiable variables. The elasticity of substitution is the change in the ratio of the use of two goods with respect to the ratio of their marginal values or prices.
This means that when firms set prices above the prevailing price level (P*), prices are relatively elastic because individuals are likely to switch to a competitor's product as a substitute. Prices below P* are believed to be relatively inelastic as competitive firms are likely to mimic the change in prices, meaning less gains are experienced ...