2、若定义6(x)=8'(x)-6涵数的导数 d x 则(1)|f(x)6(x-x0)x=f(x) (2)x-x)6(x-x0)=-6(x-x0) (3)(x)6x-x)x=(-1)(x)2、若定义 d (x) = d '(x) - d函数的导数 dx d (3) ( ) ( ) ( 1) ( ) (2)( ) '( ) ( ) (1) ( ) '( ) '( ) 0 ( ) 0 0 0 0 0 0 f x x x dx f x x x x x x x f x x x dx f x n n n - = - - - = - - - = - ò ò ¥ -¥ ¥ - ¥ d d d 则 d