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¸ñÂ÷ CHAPTER2 Second order Liner ODES
major changes

SOULTION TO PROBLEM SET
º»¹®³»¿ë Major Changes
Among linear ODEs those of second order are by far the most important ones from the
viewpoint of applications, and from a theoretical standpoint they illustrate the theory of
linear ODEs of any order (except for the role of the Wronskian). For these reasons we
consider linear ODEs of third and higher order in a separate chapter, Chap. 3.
The new Sec. 2.2 combines all three cases of the roots of the characteristic equation of
a homogeneous linear ODE with constant coefficients. (In the last edition the complex
case was discussed in a separate section.)
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