11) (5 points): True or false: Every function defined on the set of real numbers is either an even function or an odd function. If your answer is "true", then explain why; if your answer is "false" then find an example for a function that is not even and not odd. 12) (10 points): Let f(x) = x2 and g(x) = x+1 x+3 a. Evaluate (f . g) (2). b. Find a formula for (f . g) (x)