4.3.1.4.1 Ordinary point using Taylor series method ode internal name "second_order_taylor_series_method_ordinary_point"
This is the same as section below under non-constant coefficient.
4.3.1.4.2 Ordinary point using power series method ode internal name "second_order_power_series_method_ordinary_point"
This is the same as section below under non-constant coefficient.