Q16-12: thumbs up for a correct quick answer---pls pls solve---will provide a nice comment

Q16. [8 points] After long computations, we find the following information about a function f(x). . The domain of f, f', and f" is {r e R : x / 1} . f'(x) = 0 for r = -1, x = 2, x =4 . f"(x) = 0 for x = -2, x = 3 . lim f (r) = -00 r-+1 . lim f(x) = -1 and lim f(x) = co I-+-00 I-+00 Here is a summary of information about the signs of its first and second derivatives: interval r