Can show that
global_errork+1 = magnification_factor * global_errork + local_errork+1
where magnification_factor = (1 + h fx)From this we can conclude that
x(m) = f(t, x, x(1), x(1), ... x(m-1))
into a system of m 1st-order equations (see Section 9.2 in our text).