证:(2)设0(x)任意连续 ∫9(x)1(x=x) p(x)(x-x0) (x)x-x)+(x) h==-9p( 而(08(x=x=-9(0)证 : (2)设j(x)任意连续 [ ] [ '( )( ) ( )] ( ) ( )( ) ( )( ) '( ) 0 0 0 0 0 0 0 x x x x x x x x dx d x x x x x dx x x x x j j j j j d = - - + = - = - - - - = = ¥ -¥ 则 ò ( )[ ( )] ( ) 0 0 j x - d x - x dx = -j x ò ¥ -¥ 而