A(ch)B(yng)Ͻ
(dng)?sh)ڍƽY×1+ƽUM(fi)Yָ(sh)÷2×UM(fi)×1%
ƽUM(fi)Yָ(sh)
˵1UM(fi)Y/ƽY……˵nUM(fi)Y/n-1ƽY÷(sh)HUM(fi)
(g)~B(yng)Ͻ
ݕr(sh)(g)~Ӌ(j)惦(ch)~Ϣ÷g(du)(yng)Ӌ(j)l(f)(sh)
A(ch)B(yng)Ͻ
(dng)?sh)ڍƽY×1+ƽUM(fi)Yָ(sh)÷2×UM(fi)×1%
ƽUM(fi)Yָ(sh)
˵1UM(fi)Y/ƽY……˵nUM(fi)Y/n-1ƽY÷(sh)HUM(fi)
(g)~B(yng)Ͻ
ݕr(sh)(g)~Ӌ(j)惦(ch)~Ϣ÷g(du)(yng)Ӌ(j)l(f)(sh)