a. Use the Trapezoidal Rule to approximate the integral. (Round your answer to four decimal places.) b. Estimate the error in using the approximation. Express the answer rounded to three decimal...

a. Use the Trapezoidal Rule to approximate the integral. (Round your answer to four decimal places.)

b. Estimate the error in using the approximation. Express the answer rounded to three decimal places.

c. Determine the number
n of subintervals needed to guarantee that an approximation is correct to within 0.0001.