Integration by parts help.
(problem attached)

Question

Integration by parts help.
(problem attached)

saifoo.khan · Answer

attachment

slaaibak · Answer

You're doing it right.

slaaibak · Answer

I'll quickly write my full answer out

saifoo.khan · Answer

Now if i integrate -xcosx+sinx, i will again get something for which i have to use the integration by parts formula. :S

saifoo.khan · Answer

What should be my next step?

slaaibak · Answer

Just wrote it out, uploading now

saifoo.khan · Answer

Thanks a lot.

slaaibak · Answer

attachment

slaaibak · Answer

basically what you did, just complete

saifoo.khan · Answer

Wow. Your way is shorter! I wish i do these that way too! I just started this topic so probably I'll catch up. ;)

So between second and 3rd last step, you used that int by parts formula again?

slaaibak · Answer

yeah, that's correct.  yeah try getting into the habit of doing it like I did, since the further you get into mathematics, the time to do things in becomes crucial, so you want to be quick

saifoo.khan · Answer

True! Thanks alot. :)

slaaibak · Answer

it's a pleasure :)

saifoo.khan · Answer

If you don't mind me asking. Are you in a University? In what year of study do they teach you these topics?