Problem 3. (20 points): For the following functions f and 9, determine whether or not f = g almost everywhere in R. 0 ifrez (a) f(x) = 1 for all r ER g(x) = 1 ifrez if x 2 0, and r # {1, 6, 8} 5 if r = 1 7 if x = 6 (b) f(x) = |x| for all r ER g(x) = -1 ifr = 8 -r ifx