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06мšƿAñʼ



պգ
һ㲽裺
1._ĸʷֲ
ðٷСʾ䛼sԴСֵ
2.ֵ
ֵһʷֲе\ܽԸĸļƽֵ㹫I?
P492-17ļ
ijIABͶĿͶĿʼʷֲ2-1ʾsĿʡ
2-1AĿBĿͶĸʷֲ
Ŀʩ
ֵĸ
Ͷ
ĿA
ĿB
ĿA
ĿB
0.20
0.30
15%
20%
һ
0.60
0.40
10%
15%
0.20
0.30
0
-10%
ݹʽֱĿAĿBͶʷֱ
ĿAͶ=0.2×15%+0.6×10%+0.2×0=9%
ĿBͶ=0.3×20%+0.4×15%+0.3×-10%=9%
3.պָݏɢ̶?BR>ɢ̶ԺմСָzf̶ȵָҪзͱʌȡ
1

2-17AĿķ=15%-9%2×0.2+10%-9%2×0.6+0-9%2×0.2
=0.0024
PֵͬnԽ󣬷ԽСԽ?BR>2

2-17AĿķ
PֵͬnԽ󣬷ԽvСԽ?BR>ͱʞֵֻͬľ߷ճ̶o\Ƚϡ
u?
Ŀ
ֵ
10%
20%
5%
6%
rԜߵֵͬAʹñȽ϶ߵķճ̶xʹñʽбȽϡ
3

У׷=5%/10%=0.5
ҷ=6%/20%=0.3
ҷķС
PֵͬnԽ󣬷Խh֮ԽС
4.ԭ
1ԑ\ʏsС՟A\ʜʕrx

ֵxxСķ
׵ֵIֵͬr׵\СI\ʣx׷
׵ֵIֵͬr׵\gI\ʣrҪպĹϵӾ߶ԷKBȶ

ʣգ
ʡռֵϵͱ֮Ĺϵùʽʾn
RR=b·V
ʽУRRʣbռֵϵVʡ
ռֵϵbWָͶķռͶ\ʌ\ʡ
ͶʣR
R=RFRR=RF+b·V
P542-20ʺͶļ
[2-17]|޷10%ռֵϵ10%ĿķʺͶʡ
ĿA \=0.048/0.09×100%=54.44%
ĿAķ=10%×54.44%5.44%
ĿAͶ=10%+10%×54.44%15.44%
ĿB\=0.126/0.09×100%=140%
ĿBķ=10%×140%=14%
ĿBͶ=10%+10%×140%=24%
ע⣺ĿAB֮о]ôԜֵxxʣϵ͵ĿA