Find the derivative using the Fundamental Theorem of Calculus, part 1, which states that if f(x) is continuous over an interval [3, b], and the function F(x) is defined by F(X) = /'Xf(t) dt, then F'(X) = f(x) over [5, b]. an? 2 1/ t d: dX. 1 9 + :4