Which property correctly defines ∫abf(x)dx\int_a^b f(x) dx∫abf(x)dx in terms of limit of Riemann sums?
limn→∞∑i=1nf(xi)Δx\lim_{n \to \infty} \sum_{i=1}^n f(x_i) \Delta xlimn→∞∑i=1nf(xi)Δx
limn→∞∑i=1nf(xi)/n\lim_{n \to \infty} \sum_{i=1}^n f(x_i) / nlimn→∞∑i=1nf(xi)/n
limn→0∑f(xi)Δx\lim_{n \to 0} \sum f(x_i) \Delta xlimn→0∑f(xi)Δx
∑i=1nf(xi)Δx\sum_{i=1}^n f(x_i) \Delta x∑i=1nf(xi)Δx