պգ
һ㲽裺
1.ȷĸʷֲ
ðٷСʾ¼ԼֽԴСֵ
2.ֵ
ֵһʷֲепܽԸӦĸΪȨļȨƽֵ㹫ʽΪ
P492-17ʵļ
ijҵABͶĿͶĿʼʷֲ2-1ʾԼĿʡ
2-1AĿBĿͶʵĸʷֲ
|
Ŀʵʩ |
ֵ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.պָ꣨ɢ̶ȣ
ɢ̶ԺմСָꡣʾɢ̶ȵָҪзͱʵȡ
1
2-17AĿķ=15%-9%2×0.2+10%-9%2×0.6+0-9%2×0.2
=0.0024
ֵۣͬ£ԽԽ෴ԽСԽС
2
2-17AĿķ
ֵۣͬ£ԽԽ෴ԽСԽС
ͱΪֵֻͬľ߷ճ̶ȵıȽϡ
磺ҷ£
|
Ŀ |
||
|
ֵ |
10% |
20% |
|
|
5% |
6% |
ʱڶߵֵͬԲʹñȽ϶ߵķճ̶ȣʹñʽбȽϡ
3
У=5%/10%=0.5
ҷ=6%/20%=0.3
ҷķսС
ֵۣͬ£ԽԽ֮ԽС
4.ԭ
1ڵı߱СڻԤıʱѡ
2ڶ
ֵȣѡСķ
ֵҵֵͬʱıСҵıʣѡ
ֵҵֵͬʱıʴҵıʣʱҪȨպĹϵӾ߶Էյ̬ȶ
ʣգ
ʡռֵϵͱ֮Ĺϵùʽʾ£
RR=b·V
ʽУRRΪʣbΪռֵϵVΪʡ
ռֵϵbѧָͶʵķռͶʵıʵıʡ
ͶʵʣRΪ
R=RFRR=RF+b·V
P542-20ʺͶʵļ
[2-17]ΪݣΪ10%ռֵϵΪ10%ĿķʺͶʡ
ĿA ı=0.048/0.09×100%=54.44%
ĿAķ=10%×54.44%5.44%
ĿAͶ=10%+10%×54.44%15.44%
ĿBı=0.126/0.09×100%=140%
ĿBķ=10%×140%=14%
ĿBͶ=10%+10%×140%=24%
ע⣺ĿAB֮оߣôڶʵֵȣѡʣϵ͵ĿA
3
У=5%/10%=0.5
ҷ=6%/20%=0.3
ҷķսС
ֵۣͬ£ԽԽ֮ԽС
4.ԭ
1ڵı߱СڻԤıʱѡ
2ڶ
ֵȣѡСķ
ֵҵֵͬʱıСҵıʣѡ
ֵҵֵͬʱıʴҵıʣʱҪȨպĹϵӾ߶Էյ̬ȶ
ʣգ
ʡռֵϵͱ֮Ĺϵùʽʾ£
RR=b·V
ʽУRRΪʣbΪռֵϵVΪʡ
ռֵϵbѧָͶʵķռͶʵıʵıʡ
ͶʵʣRΪ
R=RFRR=RF+b·V
P542-20ʺͶʵļ
[2-17]ΪݣΪ10%ռֵϵΪ10%ĿķʺͶʡ
ĿA ı=0.048/0.09×100%=54.44%
ĿAķ=10%×54.44%5.44%
ĿAͶ=10%+10%×54.44%15.44%
ĿBı=0.126/0.09×100%=140%
ĿBķ=10%×140%=14%
ĿBͶ=10%+10%×140%=24%
ע⣺ĿAB֮оߣôڶʵֵȣѡʣϵ͵ĿA
