problems with integration

[resolved]

thanks Han for all your help, I am not ignoring your comments, it is midnight here, I'm tried, my head hurts from trying to understand the math and then trying to understand how to use the Prime.

Quote:Why are you defining the piecewise function to break at x=0? Should each piecewise function break at x=9 or x=3?

I was thinking of the result I wanted instead of how to get that result. I wanted only positive numbers which is why I broke x at 0, but you are absolutely correct that this would occur at 9 in the case of (x-9). This is the first time that I have used piecewise so your correction help greatly.

My head is full right now, so I will try again tomorrow using f(x) to introduce functions and see if that makes any difference

again thanks for your help....