The following expression represents the integral / f(x)dz for some real number a and b, and a function f lim > sin (6 + 2: ) n-+0o: a) Find Ar and a; in this expression and deduce the values of a and b, and the function f. The Ar term should be an expression involving n, I; should be an expression involving the index i and n, a and b are real numbers, and f(x) should be an expression involving Don't forget to include square brackets; use calculator notation (e.g. 3x2 is written 3 = x 2); and list your answers separated by commas Answer. [Ax, I;, a, b, f(z)] - b) Compute the value of the limit above. Give your answer to four decimal places. Answer: lim Number n-+00 - sin 6 +