# Questions tagged [equilibrium]

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### Consumer surplus at equilibrium with WTP table

I should be grateful for a breakdown of the steps I should take into account. The answer is (D).
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### Relationship between average cost and marginal cost

I cannot seem to reason why option B is a correct statement. From what I understood when AC = MC we're at a competitive equilibrium or break-even point and after that the more we move to the right the ...
Given an Edgeworth box environment, with two individuals and two goods $(x,y)$ with maximum quantities $Q_x$ and $Q_y$. Suppose that the utility functions for each individual are U_1(x,y) = x^\... 1 vote 2 answers 122 views ### Uniqueness of equilibrium I have a model with two endogenous variables X and Y, and a set of parameters that I denote by \omega. Equilibrium X^{*}(\omega) and Y^{*}(\omega) in this model is the solution to: \begin{align*}... 3 votes 0 answers 83 views ### How to solve the Bertrand model when marginal costs are different and not constant? Find the equilibrium in the Bertrand model with two firms, with total costs given by: TC_1(q_1) = \alpha q_{1}^2 TC_2(q_2) = \beta q_{2}^2 Inverse demand is given by P = A - Q, where Q = q_1 + ... 2 votes 1 answer 187 views ### Why is there a Walrasian Equilibrium if excess demand goes to infinity as price goes to 0? In one exercise, we have to argue that a Walrasian Equilibrium exists and the solution says that if we can see that excess demand goes to infinity as price goes to 0, and as price goes to infinity, ... 2 votes 2 answers 46 views ### Question about equilibrium price and surplus/excess supply My question is regarding the image below: It says “given a surplus, the price will fall quickly toward the equilibrium level of 6 dollars” but there will still be a quantity left over if the price ... 1 vote 0 answers 28 views ### How to define the market and the clearance conditions of a general sectoral computable equilibrium model? I am trying to implement a general multiproduct market (partial/sectoral) computable equilibrium model, where "general" refers to the fact that the relation of complementarity/... 2 votes 3 answers 142 views ### What does it mean when an economist talks about "equilibrium" In economics, there are many equilibrium concepts, like equilibrium under perfect competition, Monopolist equilibrium, competitive equilibrium, general equilibrium, nash equilibrium, equilibrium price,... 2 votes 1 answer 96 views ### Total derivative evaluates to zero: problem while doing comparative statics I am playing with a toy model version for my research and I have an implicit equation defining the equilibrium:\phi = \frac {S}{NF(\phi(u-\eta)+\eta - c)}$$where S,N,u,\eta,c are parameters and ... 1 vote 1 answer 77 views ### When solving for a new equilibrium price after the institution of a tax, I keep getting a price that is lower than my previous equil price. Why? For Example: D(p) = 50 - p S(p) = p/20 The p* of this problem is 47.61, however, when I add a .1 proportional tax I get an answer of 43.29 which does not make sense because that price is lower ... 1 vote 1 answer 556 views ### Fall in price of sugar affects price and quantity of candy [closed] Using the supply and demand model, explain and illustrate how the price and quantity of candy would be affected by sugar prices dropping, starting from the equilibrium point. Am I right in stating ... 1 vote 0 answers 45 views ### How to find equilibrium price with inverse demand? [closed] So I know how to do it when it is a function of Q but as a function of P I'm confused about what steps I have to take demand: p = 1000-0.025q supply: p=150+0.033q 1 vote 0 answers 48 views ### Price setting for a pure exchange economy, with two goods and two agents, with possible different utility functions that depends on total consumption Consider a pure exchange economy comprised of two agents with differentiable utility functions that are strictly increasing and strictly concave. There are only two goods in this economy (x,y) and ... 0 votes 0 answers 38 views ### Simple supply and demand problem I'm not sure about this, can I ask you if I'm wrong? Thanks. Data:$$Q_{s}=P/2Q_{d}=P-42 Questions: a) How many units will be traded at 35 dollars? At \$14 dollars? b) What quantity at what ... 