常用凑微分形式如下: dx==d(ax+6): x dx= d(ar +b) m+la 次=21次= d arcsin.=d arctan x √x 1+x dx dx = d tanx e dx= d e COS X x f'r). rdf(r) f(r)Jf() Inf(x)+c常用凑微分形式如下: ( ) ( ) ( ) ( ) ( ) ( ) ( ) ( ) 1 2 2 2 1 ; ; 1 2 ; arcsin ; arctan ; 1 1 tan ; ; ln ; cos ln . m m x x d ax b dx d ax b x dx a m a dx dx dx d x d x d x x x x dx dx d x e dx de d x x x f x df x dx f x c f x f x + + = + = + = = = − + = = =  = = +  