五、小结(本章习题课) z"+Z=0 1M+21=0令D2④y+nb=0 λ=0 R+DR+(2]R=0 若入1>0,令k2=1- PR+PR+(k'p'-nR=O x=kp,y=R(p)n→V 若<0.,令k2=元- →>p2R"+pR-(p2+n2)R=0→ y+xy+(x2v)y=0/排 x =4J()+BN(x)N=?五、小结(本章习题课 ) 1 ( ) ( ) ( ) 2 2 2 2 0 0 0 ( - ) - 0 u R j Z z Z Z u u n R R n R r m l r r l m r = F ì ¢¢+ = ïï D + = ¾¾¾¾¾¾¾®íF¢¢+ F = ï ¢¢+ ¢+ = é ù îï ë û 令 λ= 0 2 - 0, - 2 2 2 2 , ( ), ( - ) 0 k x k y R n R R k n R l m l m r r n r r r > = = = ® ¾若 令 ¾¾¾¾¾® ¢¢ ¢ + + = ¾¾¾¾¾¾® 2 - 0, - 2 2 2 2 -( ) 0 k R R k n R l m l m r r r < = ¾若 令 ¾¾¾¾¾® ¢¢ ¢ + + = ® 2 2 2 5 ( ) ( - ) 0 ( ) ( ), ? y J x x y xy x y y A J x B N x N n n n n n n ì = ¢¢ ¢ + + = í = + = î 特 通