Suppose that f is a continuous additive function on R. If c := f (1), show that we have f(x) =ex for all x e JR. [Hint: First show that if r is a rational number, then f(r) =cr.]

Study Guide #1 Mental disorder = group of emotional, cognitive, or behavioral symptoms that cause distress or significant problems Prevalence = % of ppl within a population with a disorder at a given time Lifetime prevalence = total proportion of ppl in a population who have ever had a disorder Incidence = onset or occurrence of a disorder over a period...