??????????????????????????????? Elasticity of Demand and Supply

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??????????????????????????????? Elasticity of
Demand and Supply
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???????????? (Elasticity)
??????????????????????????????????????????????????
?????????????????????????????????????????????????
????????
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?????????????????????? (Elasticity of Demand)

• ????????????????????????????? (Price Elasticity
  of Demand)
• ??????????????????????????????? (Income
  Elasticity of Demand)
• ?????????????????????????????????????????????????
  ??????????????????????? (Cross Price Elasticity
  of Demand)

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????????????????????????????? (Price Elasticity
of Demand Ed )

• ??????????????????????????????????????????????????
  ?????????????????????????????????

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?????????????????????????

• ???????????????????????? (Point Elasticity of
  Demand)
• ???????????????????????????? (Arc Elasticity of
  Demand)

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???????????????????????? (Point Elasticity of
Demand)
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???????????????????????? ?????????????????????
250 ??? ??????????????????????? 600 ????
??????????????????????? 350 ??? ???????????? 350
???? ????????????????????????????????????????????
??????
P1 250 ??? Q1 600 ???? P2 350 ??? Q2
350 ????
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???????????????????????????? (Arc Elasticity of
Demand)
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???????????????????????? ?????????????????????
250 ??? ??????????????????????? 600 ????
??????????????????????? 350 ??? ???????????? 350
???? ????????????????????????????????????????????
??????
P1 250 ??? Q1 600 ???? P2 350 ??? Q2
350 ????
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??????????????????????????????????????????????????
??????????????????
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??????????????????????????????????????????????????
??????????????????
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Price Elasticity of Demand
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1. ??????????????????????????? (Elastic Demand
1 lt ?Ed? lt ?)
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2. ???????????????????????????? (Inelastic
Demand 0 lt ? Ed ? lt 1)
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3. ????????????????????????????? (Unitary
Elastic Demand ? Ed ? 1)
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4. ?????????????????????????????????
(Perfectly Elastic Demand ?Ed? ?)
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5. ??????????????????????????????????
(Perfectly Inelastic Demand ?Ed? 0)
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????
???? ???????? ??????????????? ?????????????????? ??????????????????
???? ???????? ??????????????? ????????? ??????
Elastic 1 lt ?Ed? lt ? ????????????? ??????????????????
Unitary Elastic ? Ed ? 1 ?????????????? ??????????????
Inelastic 0 lt ? Ed ? lt 1 ?????????????????? ?????????????
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?????????????????????????????????????????????????
?????
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?????????????????????????????????????????????????
?????
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??????????????????????????????? (Income
Elasticity of Demand EY)
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?????????????????????????

• ???????????????????????? (Point Elasticity of
  Demand)
• ???????????????????????????? (Arc Elasticity of
  Demand)

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1. ??????????????????????????????? 6,000 ???
   ??????????????????????????????????? 7,000 ???
   ?????????????????????????????????????? 600 ????
   ???? 680 ???? ??????????????????????????????????
   ?????????????

2. ??????????????????????????????? 7,000 ???
??????????????????????????????? 5 ????? /?????
?????????????????????????????????????? 5,000 ???
???????????????????????????????????????????? 15
?????/????? ?????????????????????????????????????
??????????
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??????????????????????????????????????????????????
?????????????????????? (Cross - Price
Elasticity of Demand EC)
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???????????????????????????? (Arc Elasticity of
Demand)
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1. ????????????????????????? 10 ????????????????????
   ????????????????? 5 ?????????????????????????????
   ???????????????????? ??????????????????
   ?????????????????????????????????????????
2. ??????????????? 100 ??? ?????????????????????????
   60 ????????/????? ?????????????????????? 70 ???
   ??????????????????????????????????????? 80
   ????????/????? ???????????????????????????????????
   ?? ????????????????????????????????????????

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????????????????????? (Elasticity of Supply Es)

• ???????????????????????????? (Price Elasticity
  of Supply)

????????????????????????????????????????
??????????????????????????????????????????
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?????????????????????????

• ???????????????????????? (Point Elasticity of
  Supply)

• ???????????????????????????? (Arc
  Elasticity of Supply)

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???????????????????????????? 1,200 ???
???????????????? 150 ??? ?????????????????????
1,000 ??? ???????????????? 120 ???
?????????????????????????????????????
P1 1,200 ??? Q1 150 ???? P2 1,000 ??? Q2
120 ????
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1. ?????????????????????????????????
(Perfectly Inelastic Supply Es 0)
?????????????????????????????????????
?Q 0
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2. ??????????????????????????? (Inelastic
Supply 0 lt Es lt 1)
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3. ???????????????????????????? (Unitary
Elastic Supply Es 1)
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4. ?????????????????????????? (Elastic Supply
1 lt Es lt ?)
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5. ???????????????????????????????? (Perfectly
Elastic Supply Es ?)
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Price Elasticity of Supply
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??????????????????????????????????????

1. ???????????????
2. ?????????????????
3. ??????????????????????????
4. ???????????????

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1. ???????????????
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2. ?????????????????
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3. ??????????????????????????
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4. ???????????????