J(4)= (i=1,2,…,r) k 2k-1 47-1k-1+1 k k k-1 k d.×d1 ( ) ( 1, 2, , ) 1 i i i i i i i d d J i r          = =         1 1 1 1 1 1 ( ) i i i i k k d k d i k i k i k k i i i k k i k i d d c c J c        − − − + −        =        