Module for the Cauchy-Euler Differential Equation

Numerical Methods for O. D. E. using Mathematica. (c) John H. Mathews, 2003

Background

    A Cauchy-Euler differential equation has the form  

        [Graphics:Images/CauchyEulerMod_gr_1.gif].  

Use the change of variable  z = ln x  to construct a new D. E. with  Y  being a function of  z,  

        [Graphics:Images/CauchyEulerMod_gr_2.gif].  

The solution to this latter D. E. has the form  

        [Graphics:Images/CauchyEulerMod_gr_3.gif].

Then the solution to the Cauchy-Euler D. E. is

        [Graphics:Images/CauchyEulerMod_gr_4.gif].  

Derivation.

Exercise 1.  Solve the Cauchy-Euler differential equation  [Graphics:Images/CauchyEulerMod_gr_32.gif].  

Solution 1.

Exercise 2.  Solve the Cauchy-Euler differential equation  [Graphics:Images/CauchyEulerMod_gr_50.gif].  

Solution 2.

Exercise 3.  Solve the Cauchy-Euler differential equation  [Graphics:Images/CauchyEulerMod_gr_68.gif].  

Solution 3.


Converted by Mathematica      January 28, 2003