微观经济学 Microeconomics/ Microeconomic Analysis ECON20022T/ECON20512T

0

这是一份manchester曼切斯特大学ECON20022T/ECON20512T作业代写的成功案例

微观经济学 Microeconomics/ Microeconomic Analysis ECON20022T/ECON20512T

$$
(1+r) c^{\prime}\left(T^{-}\right)=s \alpha \beta<(1-s) \alpha+s \beta \alpha
$$
The left-hand is the marginal cost of training. The right-hand side is the marginal gain from training, which is realized only if the pair remain together. So $\overrightarrow{T^{h}}<\hat{r}$. The gain to the pair from choosing to adopt the technology and train the worker is
$$
(1-s) a T^{-h}-(1+r)\left(\bar{\delta}+c\left(\bar{T}^{h}\right)\right)
$$

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ECON20022T/ECON20512T COURSE NOTES :

Using a circumflex over a variable to represent percentage change in it, we can now get
$$
\hat{D}=a \hat{p}+b
$$
where $a=M \eta-N(1-\eta)$, with $M=I_{z} / D, N=I_{1}, x_{w} / D, M \geq N$, and $\eta$ is the (positively defined) price elasticity of demand for import in the poor country (with an overbar for the rich country); and
$$
b=M e_{c} \hat{y}-N \bar{e}_{m} \bar{y}+M \hat{L}-N \bar{L}
$$
with $\ell$ as the income elasticity of demand for the good denoted by the subscript.








宏观经济学 Macroeconomics ECON10252T/ECON10262T/ECON20022T/ECON20032T/ECON20262T/ECON20532T/ECON30032T/ECON30532T

0

这是一份manchester曼切斯特大学ECON10252T/ECON10262T/ECON20022T/ECON20032T/ECON20262T/ECON20532T/ECON30032T/ECON30532T作业代写的成功案例

宏观经济学 Macroeconomics ECON10252T/ECON10262T/ECON20022T/ECON20032T

$$
\pi_{u t}=u_{u t} Y_{u t}-g r_{i t} K_{u}=\left(u_{i t} \phi-g r_{u t}\right) K_{u t}
$$
and expected profit is $E\left(\pi_{i t}\right)=\left(\phi-g r_{i t}\right) K_{i t}$.
In this economy, firms may go bankrupt as soon as their net worth becomes negative, that is $A_{i t}<0$. The law of motion of $A_{i t}$ is:
$$
A_{u}=A_{u t-1}+\pi_{u \prime}
$$
that is, net worth in previous period plus (minus) profits (losses). Making use of (4.16) and (4.17), it follows that the bankruptcy state occurs whenever:
$$
u_{i t}<\frac{1}{\phi}\left(g r_{i t}-\frac{A_{t-1}}{K_{i t}}\right) \equiv \bar{u}_{i t} .
$$

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ECON10252T/ECON10262T/ECON20022T/ECON20032T/ECON20262T/ECON20532T/ECON30032T/ECON30532T COURSE NOTES :

$$
\frac{A_{i j}}{x_{i} x_{j}}=\frac{\tau_{i}}{x_{i}} \text { for any } i, j \in J_{x^{*}}
$$
Similarly,
$$
\frac{A_{r s}}{X_{r} \cdot X_{s}}=\frac{t_{s}}{X_{s}} \text { for any } r, s \in J_{\boldsymbol{x}} .
$$
Since the indices $i$ and $s$ are in $J_{x}$,
$$
A_{\text {is }}=t_{s} x_{i}=\tau_{i} x_{s} \text {, }
$$
which in turn implies that
$$
\frac{\tau_{i}}{x_{i}}=\frac{t_{s}}{x_{s}} .
$$