Sebenta de Exercícios Resolvidos - O DGE - UBI
Sebenta de Exercícios Resolvidos - O DGE - UBI
Sebenta de Exercícios Resolvidos - O DGE - UBI
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44CAPÍTULO 5. MODELO IS-LM EM ECONOMIA FECHADA E PROCURA AGREGADA<br />
Temos então que <strong>de</strong>duzir o novo mo<strong>de</strong>lo IS-LM, sendo que a<br />
única expressão que se altera é a IS:<br />
Y = C + I + G + X − M ⇔<br />
⇔ Y = C + cY dp + I − bi + G ⇔<br />
⇔ Y = C + c ( a(Y − T ) + fY f) + I − bi + G ⇔<br />
⇔ Y = C + c ( a(Y − T ) + fgY ) + I − bi + G ⇔<br />
⇔ Y (1 − c(a + fg)) = C − caT + I − bi + G ⇔<br />
1 [ ]<br />
⇔ Y =<br />
C − caT + I − bi + G ⇔<br />
(1 − c(a + fg))<br />
1 [ ] b<br />
⇔ Y =<br />
C − caT + I + G −<br />
(1 − c(a + fg))<br />
(1 − c(a + fg)) i<br />
E recalcular<br />
⎧<br />
o equilíbrio:<br />
⎪⎨ i =<br />
⎪⎩ Y =<br />
⎧<br />
⎪⎨<br />
⇔<br />
⎪⎩ Y =<br />
1<br />
(1−c(a+fg))[C−caT +I+G]− 1 k M/P<br />
( h k + b<br />
(1−c(a+fg)))<br />
h/k<br />
(1−c(a+fg))[C−caT +I+G]− h/k<br />
k M/P<br />
( h k + b<br />
(1−c(a+fg)))<br />
i =<br />
+ 1 k M/P ⇔<br />
1<br />
(1−0.8(0.6+0.4×1.08)) [100−0.8×0.6×10+30+15]− 1 20 ×2500<br />
( 0.5<br />
20 + 350<br />
(1−0.8(0.6+0.4×1.08)))<br />
0.5/20<br />
(1−0.8(0.6+0.4×1.08))<br />
g) Isso quer dizer que<br />
0.5/20<br />
[100−0.8×0.6×10+30+15]− ×2500<br />
20<br />
(1−0.8(0.6+0.4×1.08)))<br />
( 0.5<br />
20 + 350<br />
C = C + cY dp<br />
I = I − bi<br />
G = G<br />
M/P = M/P<br />
L d = kY − hi<br />
Y dp = aY + f(Y f − T (1 + i))<br />
Y f = gY<br />
= 0.338<br />
+ 1 × 2500 = 125.01<br />
20<br />
em que<br />
C c I b G M/P k h a f g T<br />
100 0.8 30 350 15 2500 20 0.5 0.6 0.4 1.08 10