Let f(x) = x 3x + 2 = (x 1)((x 1) - 3). Fill answers in the blank. (1) The domain of f is (2) The x-intercept is at x = (3) Horizontal asymptote(s) of fis and vertical asymptote(s) of f is (4) f'(x) = ... f"(x) = ... ***** (5) All critical number(s) of f are (6) f is increasing on ******** and f is decreasing on (7) local maximum of f is at the point ******* and local minimum of f is at the point (8) f is concave upward on . and the y-intercept is at y = and f is concave downward on (9) All inflection point(s) of f are (10) Use the above guidelines to sketch the curve of f. ....