Convert the following system of second-order equations to a larger system of first-order equations. This system arises from studying the gravitational attraction of one mass by another: de"(t) = FOTO"(e) = Faces Z"(t) = ceny Here c is a positive constant and r(t) = [:r(t)2 + y(t)2 + z(t)2]1/2, with t denoting time?