第一式解出来:
V'=(MV-MhVh)/M
代入第二式
(MV-MhVh)^2/2M +0.5MhVh^2=0.5MV^2
继续化简:
M^2V^2-2MMhVVh+Mvh^2Vh^2+MMhVh^2=M^2V^2
即
(M+Mh)Vh=2MV
Vh=2MV/(M+Mh)
第一式解出来:
V'=(MV-MhVh)/M
代入第二式
(MV-MhVh)^2/2M +0.5MhVh^2=0.5MV^2
继续化简:
M^2V^2-2MMhVVh+Mvh^2Vh^2+MMhVh^2=M^2V^2
即
(M+Mh)Vh=2MV
Vh=2MV/(M+Mh)