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Detailed IB ECONOMICS HL 2.2 DEMAND NOTES
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Detailed IB ECONOMICS HL 2.2 DEMAND NOTES
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ZDI.MN/Yt)Fhd→
" DEMAND indicates quantities of a
good / service
ABIE
"
consumers are wining + purchase at
firms or
understanding behaviour of consumers as
buyers different possible prices during a
particular time
period cetera part bus
.
µ
,
I ← demand curve
for individual customer
5 -
o
.
±
→
ro
g cetera paribas ( all things other than
price that can affect how much consumer
4
415
-
③
I willing / able to buy .
We assumed to be CONSTANT & UNCHANGING)
ro
3
c. movement aongmwe.mo.s.net,
u.uq.amjyaauaayrgyyyqyyj.no
any
-
?
-
I D B not show
°
does how much of the product the consumer
I -
a
8 will ACTUALLY BUY or the price they WILL PAY ; only shows how
•
I
A-
O much of the
product the consumer WILL BE PREPARED to
quantity of chocolate bars ( per week) buy at different prices -
f HiRIS.TE K#IiKlKkEEEFEMWaF9B oEEE aarmaa-aaaat.ca#miFmaa Bank
shows total quantities in the market the
good consumers are
wining
1- able to
buy at different prices ( sum of all individual demands for that good)
[a] Demand of consumer A (b) Demand curve of consumer B E) Market demand
{
bars demanded 5 bars
PE's] Pegg by At
't 't it :÷:::m
-
e-
5- 5- 5-
⇐ demanded by Bt -
bars
→
4- 4
demands
-
4 -
o
of other
: ::
'
¥
' "
÷:
I 1-
.
I -
DB
" -
=
6000 bars
8 I t 111-1111
-
O O O 1214
E 2 4 6 8 70 12 2 4 6 8 70 72 2 4 6 8 10
per week at
quantity of chocolate bars ( per week) quantity of chocolate bars ( per week) quantity of chocolate bars
( thousands per week)
$4
Shifts in the Demand curve
caused by change in a non -
price determinate qdemarfd
P D2 Indicated CHANGE IN DEMAND ( not Q demanded)
De
D, →
Dz :
at the
(P ) ( Q2) will be demanded
Dz same price ,
a
larger quantity
Rightward shift of demand curve indicates that more is demanded at
Price
decrease
increase a given price ( INCREASE IN DEMAND )
in demand in demand
D, Qz )
Dz ( will be demanded at the
:
→ a smaller quantity same
price CP ) ,
P y
- - - - -
- - - - - -
,
I l l
i
l l
: Leftward shift of demand indicates that less is demanded for a
i : :
i i given price ( DECREASE IN DEMAND)
l l
i i
:
l
l l
l
l l
l
l l
l
l l
l
l l
l l l
#
O
Qz Q1 Q2 Q
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