ρj⁢(f0+2⁢ρj)⁢s⁢as,j=∑r=1s(ρj2⁢2r+1⁢(αj+r-sr+1)+ρj⁢∑q=0r+1(αj+r-sr+1-q)⁢fq+gr+1)⁢as-r,j,