Consider the initial-value problem y' = 2x - 3y + 1, y(1) = 7. The analytic solution is y(x)-공 + 글x + 홍 ㅇ e-3(x - 1). (a) Find a formula involving c and h for the local truncation error in the nth step Euler's method is used. (b) Find a bound for the local truncation error in each step if h = 0.1 is used to approximate y(1.5). (Proceed as in Example 1 of Section 6.1.) (c) Approximate y(1.5) using h = 0.1 and h = 0.05 with Euler's method. See Problem 1 in Exercises 2.6. (Round your answers to four decimal places.) h = 0.1 y(1.5) = y(1.5) = h = 0.05 (d) Calculate the errors in part (c) and verify that the global truncation error of Euler's method is O(h). (Round your answers to four decimal places.) the error forh 0.1 is Eo.1 = |, while the error for h = 0.05 is Eo.05 = Since y(1.5) = Eo.1/Eo.05 * 2. We actually have Eo.1/Eo.05 = With global truncation error O(h) we expect (rounded to two decimal places).

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Chapter2: Second-order Linear Odes
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Consider the initial-value problem y' = 2x - 3y + 1, y(1) = 7. The analytic solution is
2.
56
y(x) %=Dㅎ + x
e-3(x - 1).
(+
%3D
9.
(a) Find a formula involving c and h for the local truncation error in the nth step if Euler's method is used.
(b) Find a bound for the local truncation error in each step if h = 0.1 is used to approximate y(1.5). (Proceed as in Example 1 of Section 6.1.)
(c) Approximate y(1.5) using h = 0.1 and h = 0.05 with Euler's method. See Problem 1 in Exercises 2.6. (Round your answers to four decimal places.)
h = 0.1
y(1.5) x
h = 0.05
y(1.5) x
(d) Calculate the errors in part (c) and verify that the global truncation error of Euler's method is O(h). (Round your answers to four decimal places.)
Since y(1.5) =
the error for h 0.1 is Eo.1 =
while the error for h 0.05 is Eo.05 =
With global truncation error 0(h) we expect
Eo.1/Eo.05 x 2. We actually have Eo.1/Eo.05 =
(rounded to two decimal places).
Transcribed Image Text:Consider the initial-value problem y' = 2x - 3y + 1, y(1) = 7. The analytic solution is 2. 56 y(x) %=Dㅎ + x e-3(x - 1). (+ %3D 9. (a) Find a formula involving c and h for the local truncation error in the nth step if Euler's method is used. (b) Find a bound for the local truncation error in each step if h = 0.1 is used to approximate y(1.5). (Proceed as in Example 1 of Section 6.1.) (c) Approximate y(1.5) using h = 0.1 and h = 0.05 with Euler's method. See Problem 1 in Exercises 2.6. (Round your answers to four decimal places.) h = 0.1 y(1.5) x h = 0.05 y(1.5) x (d) Calculate the errors in part (c) and verify that the global truncation error of Euler's method is O(h). (Round your answers to four decimal places.) Since y(1.5) = the error for h 0.1 is Eo.1 = while the error for h 0.05 is Eo.05 = With global truncation error 0(h) we expect Eo.1/Eo.05 x 2. We actually have Eo.1/Eo.05 = (rounded to two decimal places).
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