This is a basic simulation exercise and can easily be solved using Excel
Part a)
Please follow these steps:
Keep column A for time period t
Column B for constant A
Column C for variable Kt
Column C for variable Kt
Column D for variable Kt1/3
Column E for variable Lt
Column F for variable Lt2/3
Column G for variable Yt
Formulae in row 2 are as follows:
A2 = 0
B2 = 1
C2 = K0 = 0.01
D2 = K01/3 = 0.01^(1/3)
E2 = L0 = 1
F2 = L02/3= 1^(2/3)
G2 = Y0 = B2*D2*F2
t | A | K | K^(1/3) | L | L^(2/3) | Y |
0 | 1 | 0.01 | 0.215443 | 1 | 1 | 0.215443 |
Formulae for row 3 are as follows:
Formula in row 2 should be as follows:
A3 = t = 1
B3 = A = 1
C3 = K1 =
=((0.2*G2)+((1-0.07)*C2)) |
where G2 is Y0 and C2 is K0
D3 = K11/3 = C3^(1/3)
E3 = L1 =
=E2*1.01 |
F3 = L12/3= E3^(2/3)
G3 = Y1= B3*D3*F3
Copy formulae of row 3 till row 102 which is t = 100
Thus, for s=0.2, level of consumption in the economy is as follows:
Y1 | 0.377 |
Y2 | 0.505 |
Y3 | 0.612 |
Y4 | 0.705 |
Y100 | 4.267 |
b) Repeat the steps with s = 0.3
C3 = K1 =
=((0.3*G2)+((1-0.07)*C2)) |
Thus, for s = 0.3, level of consumption in the economy is as follows:
Y1 | 0.423 |
Y2 | 0.588 |
Y3 | 0.725 |
Y4 | 0.842 |
Y100 | 5.226 |
c) Given that economy is in a steady state and s changes from 0.3 to 0.33, we have to find out what happens to consumption. For this we will do the simulation as conducted in part b for s = 0.33
We see that it reaches steady state at similar time period when s = 0.3 and when s = 0.33 at around t = 36 (% change in consumption becomes 1% Year on year)
s=0.3 | s=0.33 | |
Y1 | 0.423 | 0.434 |
Y2 | 0.588 | 0.610 |
Y3 | 0.725 | 0.754 |
Y4 | 0.842 | 0.878 |
Y100 | 5.226 | 5.481 |
d) When s = 0.5
s=0.3 | s=0.33 | s=0.5 | |
Y1 | 0.423 | 0.434 | 0.492 |
Y2 | 0.588 | 0.610 | 0.718 |
Y3 | 0.725 | 0.754 | 0.901 |
Y4 | 0.842 | 0.878 | 1.057 |
Y100 | 5.226 | 5.481 | 6.746 |
As, s increases steady state is reached a little later in time. Moreover, the steady state consumption increases with increase in s.
% change in s | s changes from 0.3 to 0.33 = 10% | s changes from 0.33 to 0.5 = 52% |
Change in Y1 | 3% | 13% |
Change in Y2 | 4% | 18% |
Change in Y3 | 4% | 19% |
Change in Y4 | 4% | 20% |
Change in Y100 | 5% | 23% |
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