B;Ho H、 B B B y Its stationary condition:why??? BaHntm n=s+t t=n-s 3n+n+m=2n+2(s+t+y+x) y=s-m/2 p sets of styx p isomers m=s+x x=m-s *n equals to number of B-H bonds 3 equations to solve 4 variables B H H B H H B H B H B H H H B B H B B B t=n-s y = s - m/2 x = m - s p sets of styx p isomers BnHn+m B5H9 * n equals to number of B-H bonds * Its stationary condition: why??? n=s+t 3n+n+m =2n+2(s+t+y+x) m = s + x B B H B B B B H H B B s ty x 3 equations to solve 4 variables！