91影视

$$\begin{gathered} \overline{C}=\$3.25trillion \\ \overline{I}=\$1.3trillion \\ \overline{G}=\$3.5trillion \\ \overline{T}=\$3.0trillion \\ \overline{NX}=-\$1.0trillion \\ \overline{f}=1 \\ mpc=0.75 \\ d=0.3 \\ x=0.1 \\ l=1 \\ \overline{r}=1 \end{gathered}$$

(a) The MP curve shows the different points at which the money market is in equilbrium. The MP curve can be expressed as,

$$\begin{gathered} r+蟺=+蟺+胃脳(蟺鈥�蟺*) \\ r=\overline{r}+胃脳(蟺鈥�蟺*) \\ r=0.02+(蟺鈥�0.01) \\ r=0.01+蟺 \end{gathered}$$

The IS curve can be expressed as,

$$\begin{gathered} Y=C+I+\overline{G}+NX: \\ Y=1+0.75脳Y+1鈥�30脳r+3.5鈥�1鈥�10脳r \\ 0.25脳Y=4.5鈥�40脳r \\ Y=18鈥�160脳r \end{gathered}$$

Combining the above two equations can give the expression for the aggregate demand curve,

$$\begin{gathered} Y=18鈥�160脳(0.01+蟺) \\ Y=18鈥�1.6鈥�160脳蟺 \\ Y=16.4鈥�160脳蟺 \end{gathered}$$

From the AD curve,

$$\begin{gathered} Y=16.4鈥�160脳蟺 \\ Y=16.4鈥�160脳0.02 \\ Y=16.4鈥�3.2 \\ Y=13.2 \end{gathered}$$

From the MP curve

$$\begin{gathered} r=0.01+蟺 \\ r=0.01+0.02 \\ r=0.03 \end{gathered}$$

Using the equation for IS curve,

$$\begin{gathered} Y=C+I+\overline{G}+NX: \\ Y=1+0.75Y+1鈥�30r+4鈥�1鈥�10r \\ 0.25Y=5鈥�40r \\ Y=20鈥�160r \end{gathered}$$

If the central bank wants to keep the output level constant, it should adopt a contractionary monetary policy. This would reduce money supply and this inflatioary pressure.