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Published by Yanto Yanto, 2021-08-14 01:14:19

Model Ekonomi

Model Ekonomi

MODEL EKONOMI

Model Ekonomi Mikro

















Keseimbangan dua macam barang X dan Y pada tingkat harga Px dan Py
Fungsi Permintaan
Fungsi Penawaran

Diketahui: Fungsi permintaan dua jenis barang, Qdx = 5 – 2Px + Py dan Qdy = 6 + Px – Py;
Fungsi penawaran dua jenis barang, Qsx = -5 + 4Px – Py dan Qsy = -4 – Px + 3Py

Tentukan titik keseimbangan di kedua pasar tersebut.

Jadi, Market Equilibrium -nya adalah, MEX = {3;3) dan MEY = {5;4}.

Analisis Break–Event Point / Analisis Rugi–Laba

Model Fungsi, sbb:
FC = Fixed Cost = Biaya Tetap = k = 2000000
VC = Variabel Cost = Biaya Variabel = v*Q = 4000 Q
TC = Total Cost = FC + VC = 2000000 + 4000 Q
TR = Total Revenue = Penerimaan = p*Q = 12000 Q
 = Laba = TR – TC = -2000000 + 8000 Q

Model Kesimbangan Pendapatan Nasional

• Y=C Model ekonomi nasional satu sektor
• Y=C+I Model ekonomi nasional dua sektor
• Y=C+I+G Model ekonomi nasional tiga sektor
• Y = C + I + G + (X – M) Model ekonomi nasional terbuka

• Fungsi Konsumsi, C = f(Y)
C = a + bY

• Fungsi Tabungan, S = f(Y)
S = Y – C = Y – (a + bY) = Y – a – bY
S = -a + Y – bY = -a + (1 – b)Y

• Fungsi, I = Io
• Fungsi, G = Go
• Fungsi, X = Xo
• Fungsi, M = Mo

Diketahui model pendapatan nasional, sbb:
Y = C + I + G + (X – M)
C = 25 + 0,75Y
I = Io = 50
G = Go = 25
X = Xo = 0
M = Mo = 0
Tentukan:
• Tingkat keseimbangan pendapatan nasional nya!
• Gambarkan grafik atau fungsi permintaan agregate nya!

Model satu sektor
• Y=C

Y = 25 + 0,75Y
Y – 0,75Y = 25
0,25Y = 25
Y = 100
Model dua sektor
• Y=C+I
Y = 25 + 0,75Y + 50
Y – 0,75Y = 25 + 50
0,25Y = 75
Y = 300
Model tiga sektor
• Y=C+I+G
Y = 25 + 0,75Y + 50 + 25
Y – 0,75Y = 25 + 50 + 25
0,25Y = 100
Y = 400

TERIMA KASIH


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