dx (4) arctanx+C-arccot x+C 1+X (5) dx arcsinx+C-arccosx+C (6) cos xdx sinx+C (7 sin xdx -cos x+C (8) j、-jca=nC (9) 「jox=-m+C BEIJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS PRESS 目录上页下页返回结束目录 上页 下页 返回 结束 = +  2 1 d (4) x x arctan x +C =  (6) cos xdx sin x +C =  x x 2 cos d (8) =  sec xdx 2 tan x +C 或 − arccot x +C = −  2 1 d (5) x x arcsin x +C 或 − arccos x +C =  (7) sin xdx − cos x +C =  x x 2 sin d (9) =  csc xdx 2 − cot x +C