I have been looking at the Frobenius method for solving ODEs of the form. I have a few questions on it. (x^2)y'' + xby' + cy = 0 If b and c are functions of x, does one use the Frobenius method, where as if they are constants, it is an Euler Cauchy equation and you use y = x^r ?? Thats the first Q. anyway. Thanks folks!!!