The area A of the region S that lies under the graph of the continuous function is the limit of the sum of the areas of approximationg rectangles. A = lim Rn = lim [f(x1)Ax + f(x2)Ax + . . . + f(xn)Ax] n - n - Use this definition to find an expression for the area under the graph of f as a limit. Do not evaluate the limit. f (x) = Vx, Isxs 18 A = lim n - 0 i=