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# Teori ekonomi makro bab 6 Perekonomian Terbuka

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Perekonomian Terbuka

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### Teori ekonomi makro bab 6 Perekonomian Terbuka

1. 1. TEORI EKONOMI MAKRO3.3. EKONOMI EMPAT SEKTOR A = C + I + G + (X–M ) ( Aggregate Demand ) Y = C + S +T ( Aggregate Supply ) A = Y I + G + X = S + T + M3.3.1. Marginal, Average Propensity to Consume, Save, Tax & Import Y = C + S + T + M Y = C + S + T + M ∆Y = ∆C + ∆S + ∆T + ∆M Yn = Cn + Sn + Tn + Mn ∆Y/∆Y = ∆C/∆Y + ∆S/∆Y + ∆T/∆Y + ∆M/∆Y Yn/Yn = Cn/Yn + Sn/Yn + Tn/Yn + Mn/Yn 1 = MPC + MPS + MPT + MPM 1 = APCn + APSn + APTn + APMn MPC + MPS + MPT + MPM = 1 Atau: 1 – MPC = MPS + MPT + MPM APCn + APSn + APTn + APMn = 1 Atau: 1 – APCn = APSn + APTn + APMn3.3.2. Fungsi Konsumsi, Tabungan, Investasi, Pengeluaran Pemerintah, Pajak, Ekspor, Impor dan Perubahan Pendapatan A = C + I + G + (X–M) Y = C + S +T A = Y I + G + X = S + T + M A = C +I+G + (X–M) = C(Yd) + I + G + (X–M) = [C + c Yd ] + I + G + { X – [M + m Y ]} dimana: C = C (Yd) = C + c Yd M = M (Y) = M + m Y ,M = 0 A = C + I + G + (X –M ) Yd = Y – T , T = t Y C = 12.500 I = 5.000 G = 5.250 X = 3.500 M = 0 c = MPC = 0,75 t = MPT = 0,1 m = MPM = 0,0 1|Page
2. 2. TEORI EKONOMI MAKRO A A=Y A = 26.250 + 0,625 Y C= 12.500 + 0,75 Y C = C(Yd)–T(Y)-M(Y) = 12.500 + 0,625Y70.00065.000 1/[1- c (1 - c) - m ]. ∆Ā52.250 ∆C50.000 ∆Y26.25012.500 0 50.000 70.000 Y S S +T+M = -12.500 + 0,375 Y S = -12.500 + 0,25 Y13.750 I+G+X 6.250 I=I 5.000 ∆Y ∆S 2|Page
3. 3. TEORI EKONOMI MAKRO 0 50.000 70.000 Y-12.500 = [C + c Yd ] + I + G + { X – [M + m Y ]} = A + c Yd – m Y = A + c ( Y – T ) – mY = A + c ( Y – t Y ) – m Y = A + c ( 1 – t ) Y – m Y = A + [ c ( 1 – t ) – m ] Y = 26.250 + [ 0,75 ( 1 – 0,1 ) – 0,05 ] Y = 26.250 + 0,625 YI + G + X = S + T + M = S (Yd) + t Y + m Y = [ Yd – C (Yd)] + t Y + m Y = Yd – [C + cYd ] + t Y + m Y = –C + ( 1 – c ) Yd + t Y + m Y = –C + ( 1 – c ) ( Y – T ) + t Y + m Y = –C + ( 1 – c ) ( Y – tY ) + t Y + m Y = –C + ( 1 – c ) ( 1 – t ) Y + t Y + m Y = –C + 1 ( 1 – t ) Y – c ( 1 – t ) Y + t Y + m Y = –C + Y – t Y – c Y + ct Y + t Y + m Y = –C + Y – c Y + ct Y + m Y = –C + ( 1 – c + ct + m ) Y = –C + {1 – [ c ( 1 – t ) – m ]} Y = – 12.500 + {1 – [ 0,75 ( 1 – 0,1 ) – 0,05 ]} Y = – 12.500 + 0,375 Y ∆C Cn – Cn-1 65.000 – 50.000 15.000c = MPC =  =  =  =  = 0,75 ∆Y Yn – Yn-1 70.000 – 50.000 20.000 ∆S Sn – Sn-1 ∆Cs = MPS =  =  = 1 - MPC = 1 –  = 1 – 0,75 = 0,25 ∆Y Yn – Yn-1 ∆Yc ( 1 – t ) = MPC ( 1 – MPT ) = 0,75 ( 1 – 0,1 ) = 0,6751 – c ( 1 – t ) = 1 – [ MPC ( 1 – MPT ) = 1 – [ 0,75 ( 1 – 0,1 )] = 1 – 0,675 = 0,325c ( 1 – t ) – m = MPC ( 1 – MPT ) – MPM = 0,75 ( 1 – 0,1 ) – 0,05 = 0,625 3|Page
4. 4. TEORI EKONOMI MAKRO1 – [ c ( 1 – t ) – m ] = 1 – [ MPC ( 1 – MPT ) – MPM ] = 1 – [ 0,75 ( 1 – 0,1 ) – 0,05 ] = 1 – 0,625 = 0,375 1 1∆Y = α ∆I =  ( I2 – I1 ) =  ( 13.750 – 6.250 ) = 20.000 1– [c(1– t)–m] 0,3753.3.3. Macro Economic Model: Circular Flow of Income Pembayaran Pendapatan Rp 70.000 Jasa-jasa Faktor RT Perusahaan (Pendapatan) (Produksi) Rp 59.500 Rp 70.000 Barang2 dan Jasa2 Belanja Konsumsi Rp 56.250 Tabungan Investasi Yang Rp 3.250 Pasar Modal Direncanakan Rp 5.000 Kebj. Moneter Pajak Pengeluaran Rp 7.000 Pemerintah Pemerintah Rp 5.250 Kebj. Fiskal Impor Ekspor Rp 3.500 Luar Negeri Rp 3.500 4|Page