he table gives the values of a function obtained from an experiment. Use them to estimate | f(x) dx using three equal subintervals with right endpoints, left endpoints, and midpoints 3 4 5 6 8 f(x)-3.5-2.3 -0.5 0.2 0.9 1.5 1.9 (a) Estimate f(x) dx using three equal subintervals with right endpoints. R3 = If the function is known to be an increasing function, can you say whether your estimate is less than or greater than the exact value of the integral? O less than O greater than O one cannot say (b) Estimate f(x) dx using three equal subintervals with left endpoints. L3 = If the function is known to be an increasing function, can you say whether your estimate is less than or greater than the exact value of the integral? O less than O greater than O one cannot say