将。[(△)+(V)可得 r(+211(+hn 可令a=2+n2,B=25n 则 0<β<0<0 r((+12)=2c)2=m 00òò òò ¥ ¥ - + - - ¥ ¥ - + - G G + = × < < < ¥ = + = G G + = × + D + Ñ 0 0 1 2 1 2 2 2 0 0 ( ) 2 1 2 2 2 2 ( ) ( 1/ 2) 2 ( ) 0 , 2 ( ) ( 1/ 2) 2 ( ) ( ) [( ) ( )] 2 1 a b a b a b a b x h b a a x h b xh xh x h x h d d z z z z e z z e d d 则 可令 将 可得