Exercise II.4. Again consider the functions given in Exercise II.1(a). (a) For each part of this exercise, on one set of axes graph the following: (i) (-2)-lev, (-1)-levf, 0-levf, 2-lev f (iii) 0-lev fa, 1-lev fa, 2-lev fa, 3-lev fa (b) For each function f(-) and given x in Exercise II.1(b), find the smallest level set that x belongs to, and display on a graph that level set with Vf(x) also sketched in. Functions from II.1(a) 21 x1 (i) fi = x + x -2 (ii) f X2 I - (iii) fs (71) f3 | := 9(x 1) + (2+1) 2 (iv) f (1) x values given from II.1(b) V = (-1); v = (3) (4) (i) fi(); x = (ii) (-1)-lev f, 0-lev f2, 1-lev f2, 2-lev fi (iv) 0-lev f, 1-lev, 2-lev f, 3-lev fa (iii) f3(-); x = v anything = 4x+ -1 =(2 + 1) + (2-2) (ii) f2(.); x = 3 V (1); v = (1) (); v - (2) V = (iv) f(.); x =