ABSTRACT
A linear, second-order equation can be written in the general form d 2 y d x 2 + a 1 ( x ) dy dx + a 2 ( x ) y = f ( x ) . $$ \frac{{d^{2} y}}{{dx^{2} }} + a_{1} (x)\frac{{dy}}{{dx}} + a_{2} (x)y = f(x). $$ https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315108858/f4dff3a2-1feb-457b-a709-022257f02721/content/math6_1.tif"/>
