Solution: (a) Use Eulers method with each of the following step sizes to estimate the
Chapter 7, Problem 19(choose chapter or problem)
(a) Use Eulers method with each of the following step sizes to estimate the value of , where is the solution of the initial-value problem . (i) (ii) (iii) (b) We know that the exact solution of the initial-value problem in part (a) is . Draw, as accurately as you can, the graph of , together with the Euler approximations using the step sizes in part (a). (Your sketches should resemble Figures 12, 13, and 14.) Use your sketches to decide whether your estimates in part (a) are underestimates or overestimates. (c) The error in Eulers method is the difference between the exact value and the approximate value. Find the errors made in part (a) in using Eulers method to estimate the true value of , namely . What happens to the error each time the step size is halved?
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