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I wish I could leave this as a comment, but the first formulation is a solution to a maximisation problem of the form $$\max_{C_t} \sum_{t} \beta^{t} u(C_t) \\ \text{s.t. } \quad C_t +K_{t+1} \leq (1-\delta)K_{t} + w_{t} + r_tK_t \quad \forall t$$ The second formulation is a solution to a maximisation problem of the form  \max_{C_t} \sum_{t} \beta^{t} ...

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This is hard to define because in general in economics the definition of overvaluation of currency is very vague. In economics overvaluation or undervaluation would be a deviation from a person’s expectation of purchasing power parity (PPP) should be (see the textbook Money, Banking and Financial markets from Schoenholtz). So technically if you think that 1 ...

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An overvalued exchange rate implies that a countries currency is too high for the state of the economy. An overvalued exchange rate means that the countries exports will be relatively expensive and imports cheaper. An overvalued exchange rate tends to depress domestic demand and encourage spending on imports. -Tejvan Pettinger https://www.economicshelp.org/...

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