A second order homogeneous Cauchy-Euler Equation is an equation of the type:
, a,b,c constants,
Explain why, in the case of the homogeneous C-E DE, a solution can be of the form
It makes sense that that is the correct Ansatz, but I cannot explain why exactly that should be the case.
Setting the DE becomes the algebraic equation in m...
... because the 'common term' can be 'canceled'. If and are [distinct] solutions of (1), then the solution of the DE will be...
It can be but it isn't always in exactly the way solutions to differential equations with constant coefficients can be of the form " " although they can also be sine or cosine, polynomials or any combinations of exponential, polynomials, and sine or cosine.
Originally Posted by Aryth
And, in fact, for exactly the same reason. The substitution t= ln(x) changes an Euler-Cauchy equation into an equation with constant coefficients.