Find the integral of
I tried using u substitution, and I get:
At first it seems like it was going to be simple.
But in the problem there is a
And in my substitution there is a .
Any help would be appreciated.
The first way I did using:
and got the answer to be
However when I checked it in my calculator, it said the answer was instead,
Which I found to be the answer when I set :
I would just like to know if both of those are correct, or only one.
And if only one of them is correct, how would I know which term I should pick to use for the substitution?