If you multiply Wolfram's answer out:
Happier now ? In other words, yes the two answers simply differ by a constant.
The question (and Wolfram's Answer) is: integral ln(2x+1 - Wolfram|Alpha) (Sorry, I still don't know how to use laTex)
however, I, Wolfram and my textbook each have different answers. So, my first though was that it was just different forms but then I plugged in x = 5 and get different answers with each equation. Maybe the difference is due to the constant not being used?
Here is the answer on the back of the book:
1/2 * (2x+1) * ln(2x+1) - x + C
My work is attached.
Any help would be greatly appreciated as always!
Thanks in advance!