言等数课租妥媒课 北理工大理等>> 4∫,= arctan+C; 5 cx= arcsin x+c 6「 cos xdx=sinx+C; ∫sinx=-osx+C; (8 cos2x Sec xx=tanx+C 9 d x =csc xdx=-cotx+C, SIn H tt p:// www,heut.edu.cn arctan x C; dx x 2 1 1 (44) arcsin x C; dx x 2 1 1 (55) sin x C; (66) cos xdx (77) sin xdx cos x C; x dx 2 cos (8) xdx 2 8 sec tan x C; x dx 2 sin (9) xdx 2 9 csc cot x C;