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Shocks to Investment-100




 

 

, . .

 

7. , 400 .$? MPC 0.75 0.8. ?

S

10.00

 

r(%)

600 I

 
 


400 I, S (.$) 1100

 

GNP=5000-5400
G=1000-1000

Tax=1000-1000

C=3250-3550

I=750-850

r=8.00-7.64

400 .$ (Y-C-G)=5000-3250-1000=750

400.$ (Y-C-G)=5400-3550-1000=850

S=I(r)

MPC 0.75 0.8 20 . :

GNP=5000-5400
G=1000-1000

Tax=1000-1000

C=3250-3570

r=8.00-7.64

(Y-C-G)=5400-3570-1000=820

 

 

IS LM

 

1. 200 . . ? , ? IS?

 

.

E=Y

r=7

r=9

E

 

3500

3500 Y 6500

 

 

IS

10.00 IS

9 IS'

 

r

7

6.00

3500 Y 6500

G=1000-1000

Tax=1000-1200

r=7% Y=5703-5403

I=1031-1031

r=9% Y=4279-3997

I=469-469

C=Y-I-G

C=5703-1031-1000=3672

C1=5403-1031-1000=3372

 

. 300 . . . - . , .

 

 

2. , 300 .$? .

.

E=Y

r=7

r=9

E

 

3500

3500 Y 6500

 

IS

 

10.00 IS

9 IS'

 

r

7

6.00

3500 Y 6500

 

G=1000-1300

Tax=1000-1000

r=7% Y=5703-5403

I=1031-1031

r=9% Y=4279-5047

I=469-469

750 . . :

Y/G=1/1-MPC

Y/G=1/1-0.6=2.5

 

3. 200 . , Y Baseline ?

 

.

10.00 IS

E=Y 9 IS

650

r=7

r

E r=9

7

3500

3500 Y 6500 3500 Y 6500

 

G=1000-1000

Tax=1000-1200

r=7% Y=5703-5403

I=1031-1031

r=9% Y=4279-3997

I=469-469

Y Baseline, 120 . .

Y/G=1/1-MPC

1/1-MPC=2.5

G= Y/2.5=300/2.5=120.

 

4. E=C(Y-T)+1+C. ( = 0,60). , r=7% r = 9%?, = 0,70. IS , 0,60 0,70?

650 E=Y 10.00 IS

r = 7% 9

r = 9% r

3500 7

3500 Y 6500 3500 Y 6500

 

 

= 0,6: = 0,70:

G= 1000 G = 1000

Tax = 1000 Tax = 1000

r = 7% Y = 5703 Y=5938

I = 1031 I=1031

r = 9% Y = 4297 Y=4063

I = 469 I=469

 

 

1) = 0.60:

E (r = 7%) = C(Y-T)+I+G= 0.6(5703 1000) + 1031 + 1000 = 4852.8

E (r = 7%) = C(Y-T)+I+G= 0.6(4297 1000) +469 + 1000 = 3447.2

 

2) = 0.70:

E (r = 7%) = 0.7(5938 1000) +1031 + 1000 = 5487.6

E (r = 7%) = 0.7(4063 1000) + 469 + 1000 = 3613.1

 

0.70 IS .

5. (), , :

) =0,60

) =0,70

=0,70.

 

=0,60 =0,70

10.00 IS 10.00 IS

 
 


9 9

 

r r

 

7 7

       
   


3500 Y 6500 3500 Y 6500

 

 

. = . =

= -0,60/ (1-0,60)= - 1,5 = -0,70/(1-0,70)= -2,3

 

, . , IS .

 

 

6. (/) () 100 . $? ? LM?

 
 

 


12.00 5500 10.00 LM

M/P M/P1 LM1

r r

 

 

4.00 4500 4.00

500 M/P 1000 4500 Y 5500

 

= 750-850

= 1.00- 1.00

Y= 4500 6.40-4.27

Y= 5500 9.60-7.47

100 . . 2.13 . .

 

7. (M/P) , () 0,1? ? LM?

 
 


12.00 M/P1 M/P2 10.00 LM1

 

r r LM

 

 

4.00 4.00

500 M/P 1000 4500 Y 5500

 

 

M=750-750

P=1.00-1.10

Y=4500r 6.40-7.85

Y=5500r 9.60-11.05

1)M/P=750/1.00= 750

2) M/P=750/1.10= 681.8

 

0.1, . 68,2 . % 1,45

 

9. () 0.1, () Baseline?

12.00 M/P M/P1 10.00 LM

LM1

 

r r

4.00

4,00

500 M/P 1000 4500 Y 5500

 

M=750-750

P=1.00-1.10

Y=4500r 6.40-7.85

Y=5500r 9.60-11.05

M*P=750*0.1=75

M=750+75=825

Baseline, 75.

12.00 M/P 10.00

 
 


r r

 

4.00 4.00

500 Y 1000 3500 Y 6500

=750-825

=1.00-1.10

Y=4500r 6.40-6.40

Y=5500r 9.60-9.60

10. LM, 75 . $? , LM .

       
   


12.00 M/P M/P1 10.00 LM

LM1

 

r r

4.00

4,00

500 M/P 1000 4500 Y 5500

 

 

= 750 - 825

= 1.00 - 1.00

Y = 4500 r 6.40-4.80

Y = 5500 r 9.60-8.00

 

() () (), LM. , 75 . $ / , LM , .

 

 





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