# Questions tagged [equilibrium]

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### 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,...
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 $... 1 vote 1 answer 39 views ### When solving for a new equilibrium price after the institution of a tax, I keep getting a price that is lower than my previous equil price. Why? For Example:$D(p) = 50 - pS(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 92 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 20 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 25 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 37 views ### Simple supply and demand problem I'm not sure about this, can I ask you if I'm wrong? Thanks. Data: $$Q_{s}=P/2$$ $$Q_{d}=P-42$$ Questions: a) How many units will be traded at 35 dollars? At$14 dollars? b) What quantity at what ... 