2۶ʷ?BR>1ֱ_ʲϼAϼBʲ׃ӂ
2]ֱABռ루S1İٷֱxԴݼA(y)루S2ˮƽʲзʑKN?BR>3_A(y)A(y)×۾×S2·P·E
4_ʽ
ʽA/S·SB/S1·SS2·P·E?BR>()ʽ(x)A(y)ⷨc(din)
ʽ(x)A(y)ⷨǸ^Ԥ~Ҫһַνg^ԣָʽ֮ϵʽ(x)ɽʽʽ𡢱ʽCʽ
ʽ(x)A(y)ⷨʽһǸʽռ呬ĹϵԤʽҪһDzȊ^ķʽԤʽ?BR>Txʽռy֮Ĺϵʽʾ
y=abx
ʽУaʽbλʽֵɲøߵc(din)عֱ߷֙
1عֱ߷
]عֱ߷abԽ·õ
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2ߵ͵?BR>Sһֱԭøߵ͵͵ֱ@ͿabĸߵָI(y)㼉Φʽռo(j)ָҔ㼰(yng)ʽռߵ͵͵ֱ߷̣
I(y)(yng)ʽռab×I(y)
СI(y)(yng)ʽռab×СI(y)
̵ⷽ?BR>
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aI(y)(yng)ʽռb×I(y)
СI(y)(yng)ʽռb×СI(y)
ע⣺ߵҵʽռҲܲͬ͵ҔӦʽՊAҲܚ?