3. If Ln represents the left-hand Riemann sum with n subintervals and Rn represents the right-hand Riemann sum with n subintervals, is it true that the midpoint Riemann sum with n subintervals, Mn can be found by calculating Mn = In + Ring 2 2 Investigate with x2 dx and n = 2. 06 4. Consider the integral / f (1:) dm. Fill in the blanks below in the formula for the 0 trapezoid method with three subintervals: T3: 2 (f(0)+2f(_)+_f(_)+f(_))