CHƯƠNG 2
CUNG CẦU VÀ
GIÁ CẢ THỊ TRƯỜNG
GV: Hà Xuân Thùy
CÂN BẰNG THỊ TRƯỜNG
CÂN BẰNG
THỊ TRƯỜNG
Trạng thái cân bằng thị trường
Trạng thái dư thừa hay thiếu hụt của thị trường
Sự thay đổi trạng thái cân bằng
Vấn đề kiểm soát giá
2
P D Trạng thái
12 3
10 6
8 9
612
415
218
TRẠNG THÁI CÂN BẰNG CUNG CẦU
3
Q
P
S
Qe
D
Pe
Trạng thái cân bằng: cung HH đủ thỏa mãn cầu HH
E
CB
THỪA
THIẾU
S
15
12
9
6
3
TRẠNG THÁI CÂN BẰNG CUNG CẦU
260P120
10P6Q
270P6Q
E
S
D
+−=
+=
+−=
3
65
12
260 =
•Ví dụ: Tìm giá và lượng cân bằng
Suy ra PE =
QE = 140
TRẠNG THÁI DƯ THỪA
5
Trạng thái dư thừa: cung HH lớn hơn cầu HH
P1
QDQSQ
P
S
Qe
D
Pe
P D S TT
12 315
10 612
8 9 9 CB
612 6
415 3
218
THỪA
P1 > Pe : QS > QD : dư thừa
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