Eksamenssett.no
Ressurser
Skolenytt
Hoderegning
SAM2
Formelark
Mikroøkonomi
eksamenssett.no
Konsumentteori
•
M
R
S
=
M
U
x
M
U
y
=
p
x
p
y
\displaystyle MRS = \frac{MU_x}{MU_y} = \frac{p_x}{p_y}
MRS
=
M
U
y
M
U
x
=
p
y
p
x
•
p
x
x
+
p
y
y
=
m
p_x x + p_y y = m
p
x
x
+
p
y
y
=
m
•
ε
d
=
d
Q
d
p
⋅
p
Q
\displaystyle \varepsilon_d = \frac{dQ}{dp} \cdot \frac{p}{Q}
ε
d
=
d
p
d
Q
⋅
Q
p
•
K
O
=
∫
0
Q
∗
p
(
Q
)
d
Q
−
p
∗
Q
∗
\displaystyle KO = \int_0^{Q^*} p(Q)\,dQ - p^* Q^*
K
O
=
∫
0
Q
∗
p
(
Q
)
d
Q
−
p
∗
Q
∗
Produsentteori
•
M
C
=
d
T
C
d
Q
\displaystyle MC = \frac{dTC}{dQ}
MC
=
d
Q
d
TC
•
A
T
C
=
T
C
Q
\displaystyle ATC = \frac{TC}{Q}
A
TC
=
Q
TC
•
M
R
T
S
=
M
P
L
M
P
K
=
w
r
\displaystyle MRTS = \frac{MP_L}{MP_K} = \frac{w}{r}
MRTS
=
M
P
K
M
P
L
=
r
w
•
π
=
T
R
−
T
C
=
p
⋅
Q
−
T
C
(
Q
)
\pi = TR - TC = p \cdot Q - TC(Q)
π
=
TR
−
TC
=
p
⋅
Q
−
TC
(
Q
)
Markedsformer
•
FK:
p
=
M
C
p = MC
p
=
MC
•
Monopol:
M
R
=
M
C
MR = MC
MR
=
MC
,
M
R
=
a
−
2
b
Q
MR = a - 2bQ
MR
=
a
−
2
b
Q
•
L
=
p
−
M
C
p
=
−
1
ε
\displaystyle L = \frac{p - MC}{p} = -\frac{1}{\varepsilon}
L
=
p
p
−
MC
=
−
ε
1
(Lerner)
•
Cournot:
q
i
=
a
−
c
3
b
\displaystyle q_i = \frac{a - c}{3b}
q
i
=
3
b
a
−
c
(symmetrisk duopol)
•
D
W
L
=
1
2
(
p
M
−
M
C
)
(
Q
F
K
−
Q
M
)
\displaystyle DWL = \frac{1}{2}(p^M - MC)(Q^{FK} - Q^M)
D
W
L
=
2
1
(
p
M
−
MC
)
(
Q
F
K
−
Q
M
)