viewimage.php?id=20bcc42ee0df39b267bcc5&no=24b0d769e1d32ca73ded81fa11d02831ecb95a6124af73c1834c571bfbe66afda2acdad1bf99da7421ac64a5b6c28cd3f095008172e7924d034074d9d7f0e13cec0e8e155ed43282f3017be6db63b75dc149ff1500c9

sec^3÷(tan+1) 적분은 생각해도 모르겠고
1-1/x=tanx해도 sec^3÷(1-tan)^2적분이라 몰겠음


어케하노..

- dc official App