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% |
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>ɢ̶ԺմСָzf̶ȵָҪзͱʌȡ
1
2-17AĿķ=15%-9%2×0.2+10%-9%2×0.6+0-9%2×0.2
=0.0024
PֵͬnԽԽСԽ?BR>2
2-17AĿķ
PֵͬnԽԽvСԽ?BR>ͱʞֵֻͬľ߷ճ̶o\Ƚϡ
u?
Ŀ |
||
ֵ |
10% |
20% |
5% |
6% |
rԜߵֵͬAʹñȽ϶ߵķճ̶xʹñʽбȽϡ
3
У=5%/10%=0.5
ҷ=6%/20%=0.3
ҷķС
PֵͬnԽԽh֮ԽС
4.ԭ
1ԑ\ʏsС՟A\ʜʕrx
2Ԝ
ֵ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]ôԜֵxxʣϵ͵ĿA
3
У=5%/10%=0.5
ҷ=6%/20%=0.3
ҷķС
PֵͬnԽԽh֮ԽС
4.ԭ
1ԑ\ʏsС՟A\ʜʕrx
2Ԝ
ֵ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]ôԜֵxxʣϵ͵ĿA