2. Let f(x) = x2. (a) Write down the formula for the LHS Riemann sum for x2dx using n rectangles. Hint: Ax = 1 and the left-hand endpoint ci = n 1 - 0 (b) Using the fact that n(n - 1) (2n - 1) 1= 0 6 find the value of the integral by taking the limit of the sum as n - co. Page 2 of 3