Let

\[f(t) = \int_0^t (x - 7)(x - 4)(x + 1)(e^x - 1) \left( \arctan (x) - \frac{\pi}{3} \right) \: dx.\]

Find all values of t where f(t) has a local minimum at t

Sorry, I put this question again, but the answer was in decimals but i need it in simplifed.

Guest Jan 6, 2021