“Hand-in question": Consider the cubic equation Ex³ + x - 2 = 0, 0 < € < 1. Use the direct method of perturbation to find the root close to 2, working as far as the first-order correction. Use a balancing argument in order to rescale x, so that a perturbation using the rescaled variable leads to the other two roots. By taking a perturbation series in powers of √, find these roots, again working as far as the first-order correction.
“Hand-in question": Consider the cubic equation Ex³ + x - 2 = 0, 0 < € < 1. Use the direct method of perturbation to find the root close to 2, working as far as the first-order correction. Use a balancing argument in order to rescale x, so that a perturbation using the rescaled variable leads to the other two roots. By taking a perturbation series in powers of √, find these roots, again working as far as the first-order correction.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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