How do you use the Fundamental Theorem of Calculus to find the derivative of #int sqrt(1+ sec(t)) dt# from x to pi?
you're interested in the second part of the Fundamental Theorem which states that
here you want
to get that into the form required by the FTC pt 2, and using just the summation signs to save time, we observe that
so if we are to use the FTC part 2, we re-write it as