Recall the definition of a definite integral: [ f(z)de = lim LAz.)Ax where ; are right endpoints. (a) Determine Ax and ; in the definition for (3 + 3x) do. Ax = Ci = (b) Using the definition, evaluate the integral. (3 + 3x) do =Suppose that the integral I = / f(x) dx can be represented by the following Riemann sum using right endpoints and n subintervals: 2 2 14 7n 7 49 + 49 + 1 49 n n n n n (a) Determine b. b = (b) Determine f(I). f(z)Consider the function f(a) - 3, if 4