a. Find intervals where f(I) = -41 - 41 4 4 are increasing and decreasing. OThe function is increasing on (-oo, -=] and decreasing on [-7, 0] and [0, co) OThe function is decreasing on (-00, --] and increasing on [-7, 0] and [0, co) OThe function is increasing on (-oo, -=] and [-, 0], and decreasing on [0, Do) ONone of these. OThe function is decreasing on (-oo, - 7 1 and [0, oo), and increasing on [- 2, 0] b. Suppose that a function y = f(x) has the graph as below. For which values of I is the function increasing and decreasing? 0.6 04 02 -0.2 -0.4 0.6 -2 OThe function is decreasing on [1, co); and it is decreasing on (-00, -1] and [-1, 1]. The function is decreasing on (-oo, -1] and [1, oo); and it is increasing on [-1, 1]. OThe function is increasing on (-oo, -1]; and it is decreasing on [-1, 1] and [1, 00). ONone of these. The function is increasing on (-oo, -1] and [1, oo); and it is decreasing on [-1, 1]. C. Find intervals where f(z) = 2 + 412 - 3 are increasing and decreasing. Of(x) is increasing on (-00, -= 1, while it is decreasing on [-=, 0] and [0, co). Of(x) is decreasing on (-oo, -=] and [0, co), while it is increasing on [-= , 0]. Of(x) is increasing on (-oo, -] and [0, co), while it is decreasing on [- 1 00 60/ 00 Of(x) is decreasing on [0, oo), while it is increasing on (-00, - =] and |- ONone of these. Please answer all parts of the