finding the derivative of a definite integral

Find the derivative of the following function at x = 1

http://img512.imageshack.us/img512/8052/58866883iz3.jpg

Based on the Fundamental Theorem of Calculus, Part I would this be correct?

http://img296.imageshack.us/img296/6778/3attemptjo2.jpg

http://img296.imageshack.us/img296/3...jpg/1/w232.png

Or would it become something like

$\displaystyle (-1+2t)/(1+2t)$

thanks, my teacher to so horrible. I might actually be able to learn something this way. (Nod)