.ive tried everything i could think of and cant get a proper u.
x^2 (sq.rt.(x+1)) dx
....now you continue (again by parts)!
(sin x) dx/(sq.rt.(cos^3 x))
, and this is an integral of the form
OR you can make the substitution and etc.
sin (sq.rt.(x+1)) dx/ (sq.rt. (x+1) from 3 to 8
they dont seem like they should cause too much problems, but for the life of me, i cant figure them out
any help is appreciated, as always