s/v2-s/v1=t怎么推成v1=v2*s/s-v2*t

问题描述:

s/v2-s/v1=t怎么推成v1=v2*s/s-v2*t

s/v2-t=s/v1 s-v2t/v2=s/v1v1=v2s/(s-v2t)