intermediate micro lecture 12
DESCRIPTION
asdfvTRANSCRIPT
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Д
№12
С : М
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Ц
Г .
.
.
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Ц
, y
p(y)
y-
p(y) .
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М я ?
; Ш
П ; , . . ;
. ; OPEC
;
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Ц
,
я ? y*
).()()( ycyypy
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А ө ө
y*
0)(
)()(
dy
ydcyyp
dy
d
dy
yd
y = y*,
.)(
)(dy
ydcyyp
dy
d
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А
.)(
)()()(dy
ydpyypyyp
dy
dyMR
dp(y)/dy dp(y)/dy < 0.
)()(
)()( ypdy
ydpyypyMR
y > 0.
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.)(
)(1)(
)()()()(
dy
ydp
yp
yyp
dy
ydpyypyyp
dy
dyMR
Э
)(
)(
ydp
dy
y
yp .
11)()(
ypyMR
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.1
1)()(
ypyMR
k
kypyMR
1
1*)(*)( .1
1
*)(
k
yp
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01
101
1*)(
yp
.111
я
я .
1MR(y*) p(y*) 1 k,
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Mark-up
111
*)(1
1*)(kk
ypkyp
.11
*)(
k
kk
kyp
e = -3 k/2, e = -2 k.
markup- .
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y
MC(y)
p(y)
ye
p(ye)
p(y) = MC(y)
ye.
М
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y
MC(y)
p(y)
ye
p(ye)
CS
PS
p(y) = MC(y)
ye.
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y
MC(y)
p(y)
MR(y)
y*
p(y*)
p(y) = MC(y)
ye.
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y
MC(y)
p(y)
MR(y)
y*
p(y*) CS
PS
М
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y
MC(y)
p(y)
MR(y)
y*
p(y*) CS
PS
М
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y
MC(y)
p(y)
MR(y)
y*
p(y*) CS
PS
М
DWL
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Э
. я
.
я
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я
I : я . я
.
II : я
. III : я
. я .
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p(y)
y
MC(y)
y
p y( )
I я
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p(y)
y
MC(y)
y
p y( )
y y
p y( )
p y( )
I я
p y MC y p y MC y( ) ( ), ( ) ( )
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p(y)
y
MC(y)
y
. я
.
PS
I я
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III я
ё , 1 2.
y1 1 . Э p1(y1).
y2 2 . Э p2(y2).
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y1 y2
y1 y2 я ?
).()()(),( 2122211121 yycyypyypyy
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).()()(),( 2122211121 yycyypyypyy
0
)(
)(
)()(
1
21
21
21111
11
y
yy
yy
yycyyp
yy
y y
p y yc y y
y y
y y
y2 22 2 2
1 2
1 2
1 2
2
0
( )( )
( )
( )
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1)(
1
21 y
yy
1)(
2
21 y
yy
)(
)()(
21
21111
1 yy
yycyyp
y
.)(
)()(
21
21222
2 yy
yycyyp
y
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)(
)()()(
21
21222
2
111
1 yy
yycyyp
yyyp
y
MR1(y1) = MR2(y2) y1 + y2
я . MR1(y1) > MR2(y2) 2 1
.
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MR1(y1) MR2(y2)
y1 y2 y1* y2*
p1(y1*) p2(y2*)
MC MC
p1(y1) p2(y2)
З 1 З 2
MR1(y1*) = MR2(y2*) = MC p1(y1*) я p2(y2*).
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III я
?
1
1111
11)()(
ypyMR
.1
1)()(2
2222
ypyMR
)()()( *
2
*
1
*
22
*
11 yyMCyMRyMR
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.1
1)(1
1)(2
*
22
1
*
11
ypyp
)()( *
22
*
11 ypyp
.1
11
1 21
21
.