Q3. For each of the following pairs of functions f(n) and g(n), either f(n) = O(g(n)) or g(n) = o(f(n)), but not both. Determine which is the case. a) f(n) = (n? - n)/2 , g(n) = 6n b) f(n) = n +2 / n, g(n) = n2 c) f(n) = n + log n, g(n) = n d) f(n) = n2 + 3n +4, g(n) = n