C(s) 2-22(a)R G G2G3GAGs 1+Gah+G,Gh +G,g (b)9个单独回路 -G,HL=-GhL=-GhL=-G, h Ls=-G,G, h 5 -G G3 G4GsG6H5, L7=-GG8G6H5, L8=g,H G8GH5, Lg=GHH 6对两两互不接触回路:L1L2LL3LL3LL2LsL2LL2 三个互不接触回路1组:L1L2L3 4条前向通路及其余子式:P1=G1G2G3G4G3G6,△1=1;P2= GG3G4GSG6,△2=1 P3=-G7HIG8G6, A3=1+GH2; P4=G G8G6, A4=1+G4H2 Cs ∑P△k R(S)1-∑L2+∑L1L-L1L2L3 C(s)590 =15.128 C(s) abcd +ed(I-bg R(s)39 R(s 1-af-bg-ch-ehgf +afc C(s) bcde +ade +(a+ bc(1+eg le(1+cf)-lehbe -leha RI() 1+cf +eg+ bede+cefg +adeh r2(s) 1+cf +eg+ bcdeh+ cefg+ adeh (o) CS)=lahd-1g)+aej+ aegI+(bdh * bdej*+ b degi)+ (cdh t efdej+ ci) g-fg C(s) fdh+fdej+i+fj C(s) h(l-fg)+ej+egi R2(s) 1-f deg-fg R3(s) 1-fdeg-fg2-22(a) （2-22题） 3 1 3 4 3 2 3 2 1 2 3 4 5 6 1 G H G G H G G H G G G G G G R(s) C(s) + + + = + (b) 9个单独回路： 1 2 1 2 4 2 3 6 3 4 3 4 5 4 L5 G1G2G3G4G5G6H5 L = −G H ,L = −G H ,L = −G H ,L = −G G G H , = − 6 7 3 4 5 6 5 7 1 8 6 5 8 7 1 8 6 5 L9 G8H4H1 L = −G G G G G H ,L = −G G G H ,L = G H G G H , = 6对两两互不接触回路： L1L2 L1L3 L2L3 L7L2 L8L2 L9L2 三个互不接触回路1组： L1L2L3 4条前向通路及其余子式： P1=G1G2G3G4G5G6 ,Δ1=1 ; P2=G7G3G4G5G6 , Δ2=1 ; P3=-G7H1G8G6 ,Δ3=1+G4H2 ; P4=G1G8G6 , Δ4=1+G4H2 ;    = = − + −  = 9 a 1 6 1 a b c 1 2 3 4 k 1 k k 1 L L L L L L P R(s) C(s) (c) 15.128 39 590 R(s) C(s) = = (d) 1 af bg ch ehgf afch abcd e d(1 bg) R(s) C(s) − − − − + + − = (e) 1 cf e g bcdeh cefg adeh bcde ade (a bc)(1 e g) R (s) C(s) 1 + + + + + + + + + = 1 cf e g bcdeh cefg adeh le(1 cf) lehbc leha R (s) C(s) 2 + + + + + + − − = (f) 1 f deg fg [ah(1 fg) aej aegi] (bdh bdej bdeg i) (cfdh cfdej ci) R (s) C(s) 1 − − − + + + + + + + + = 1 f deg fg fdh fdej i fj R (s) C(s) 2 − − + + + = 1 f deg fg h(1 fg) e j egi R (s) C(s) 3 − − − + + =