基本积分公式 )d=kx+C是常数) (2)xas+1 +1+C(H≠ (3)1dx=ln|x|+C(x≠0) dx= arctan x+C 十x (小n1= arcsinx+C基本积分公式: kdx = kx +C  (1) C x x dx + + = +  1 (2) 1    (   −1) dx x C x = +  ln | | 1 (3) ( x  0) (k是常数) dx x C x = + +  arctan 1 1 (4) 2 dx x C x = + −  arcsin 1 1 (5) 2