[SOLVED] Calculus: Limits 1. For all real numbers x and y, let f be a function such that f(x+y) = f(x) + f(y) + 2xy and such that lim (h -> 0) (f(h)/h) = 7 a. Find f(0). Justify your answer. b. Use the definition of the derivative to find f'(x). c. Find f(x). Dang... I'm really stumped because I am unsure what it is asking :(. Thank you.