Suppose that f(x) is a continuous positive function, and R equal width) for f(x). What does the limit lim RN represent? N The area under the graph of on the interval [3, 5]. The area under the graph of f on the interval [1,5]. The area under the graph of f on the interval [0, 2]. The area under the graph of on the interval [1, 3]. = Z|N N '(1+2) j=1 a Riemann Sum (with N rectangles of