problems with integration

[resolved]

the expression I used in my text I copied from Mathematica and it is not how I typed the expression into my HP Prime. That is how Mathematica simplified the expression. I have had too many problems using implicit multiplication in the HP Prime and for the most part i use only the explicit multiplicaton because of errors when raising a variable to a power. ( I hope HP fixes this bug as Mathematica doesn't seem to have any problems in this regard)

So even with EVERY multiplication sign explicitly expressed, the HP Prime still uses the power formula on part of the expression and expands certain terms before integration causing a lost of information. Is this a bug, as I don't think the result is correct, but it is closer to what I want than what I get in Mathematica. There the whole expression is simplified before it is integrated, destorying the whole value of the equation