6 Chapter 6.4 Reduction to a single ODE. Problems page 415

 6.1 problem Problem 4(a)
 6.2 problem Problem 4(b)
 6.3 problem Problem 4(c)
 6.4 problem Problem 4(d)
 6.5 problem Problem 4(e)
 6.6 problem Problem 4(f)
 6.7 problem Problem 4(g)