(10 points) In this problem you will calculate 5x3 da by using the formal definition of the definite integral: (a) The interval [0, 3] is divided into n equal subintervals of length Ax. What is Axx (in terms of n)? Ax = 3 (b) The right-hand endpoint of the :th subinterval is denoted a;. What is a$ (in terms of k and n)? 3k (c) Using these choices for a* and Ax, the definition tells us that - 5x3 da = lim What is f(a*) Ax (in terms of k and n)? f(x*)Ax = 5(3k)