Consider the integral approximation T20 of So 4e- dac. Does T20 overestimate or underestimate the exact value? O A. overestimates O B. underestimates Find the error bound for 720 without calculating I'm using the result that M(b - a) 3 Error(TN) S 12N2 where M is the least upper bound for all absolute values of the second derivatives of the function 4e- on the interval [a, b]. Error(T20)Use six rectangles to find an estimate of each type for the area under the given graph of f from a = 0 to ac = 12. -110 -1 1.0 13 1. Take the sample points from the left-endpoints. Answer: L6 = 59.7778 2. Is your estimate L6 an underestimate or overestimate of the true area? Overestimate 3. Take the sample points from the right-endpoints. Answer: R6 = 51.7778 4. Is your estimate Ro an underestimate or overestimate of the true area? Underestimate 5. Take the sample points from the midpoints. Answer: M6 = 56.1Use four rectangles to find an estimate of each type for the area under the given graph of f from x = 1 to x = 9. 1/0 11 1. Take the sample points from the left-endpoints. Answer: L4 = 14 2. Is your estimate L4 an underestimate or overestimate of the true area? Underestimate v 3. Take the sample points from the right-endpoints. Answer: R4 = 17.6 4. Is your estimate R4 an underestimate or overestimate of the true area? Overestimate v 5. Use the Trapezoid Rule with n = 4. Answer: T4 = 15.3 6. Is your estimate T4 an underestimate or overestimate of the true area? Overestimate