(a) Use the Midpoint Rule, with n = 4, to approximate the integral ∫₀⁴ 5e⁻ˣ² dx.
M₄ = (Round your answers to six decimal places.)
(b) Compute the value of the definite integral in part (a) using your calculator, such as MATH 9 on the TI83/84 or 2ND 7 on the TI-89. ∫₀⁴ 5e⁻ˣ² dx = 4.431135 .
(c) The error involved in the approximation of part (a) is
Eₘ = ∫₀⁴ 5e⁻ˣ² dx - M₄ = 0.000458 .
(d) The second derivative f''(x) =
The value of K = max |f''(x)| on the interval [0, 4] =
(e) Find a sharp upper bound for the error in the approximation of part (a) using the Error Bound Formula |Eₘ| ≤ K(b-a)³/24n² = (where a and b are the lower and upper limits of integration, n the number of partitions used in part a).
(f) Find the smallest number of partitions n so that the approximation Mₙ to the integral is guaranteed to be accurate to within 0.001. n =