Oh yeah it should be sec(u) which integrates into ln | sec(u) + tan(u) | + C

So for the first one I was basically down to deriving what I had re arranged and the other two were correct except for me incorrectly deriving 3-x^5. It derives into 5x^4 so to balance you need a -1/5 infront of the intergrand. which makes it -1/5 ln | 3 - x^5 | + C

Ok I figured i was very close with them and this clears it right up! Thanks!

Also in the future when I need help how do I post my problems like you have ? It would be easier to have them with the proper symbols and things like how you rewrote my examples in a more formally in math terms.

Thanks again! Lookin forward to helpin and gettin help when i need it!!