(4)sinxdc=-cosx+C (5)cos xdx=sinx +C (6)sec2 xdx=tanx+C (7)csc2xdx=-cot x+C 8)secx tan x=secx+C (9)csc x cot xdx=-cscx+C (心N= arctan+C -dx= arcsinx+c 1+x (12)shxdx=chx+C (13)「chxa=shx+C7 xdx x C (5) cos sin xdx x C (6) sec tan 2 xdx x C (7) csc cot 2 xdx x C (4) sin cos x xdx x C (8) sec tan sec x xdx x C (9) csc cot csc dx x C x arcsin 1 1 (10) 2 dx x C x arctan 1 1 (11) 2 shxdx chx C (12) chxdx shx C (13)