ABSTRACT
Ordinary differential equations involve an independent variable, t, and a dependent variable, x, which is to be a function of t so that x = x(t). We shall denote the derivative of x with respect to t by x′ SO that x ′ = d x d t . https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780203745489/72d71235-428b-4675-8f02-a350ed612e08/content/eq1.tif"/>
