11 Chapter 2, Second order linear equations. Section 2.4.1 Cauchy-Euler equations. Exercises page 120

11.1 problem 1(a)
11.2 problem 1(b)
11.3 problem 1(c)
11.4 problem 1(d)
11.5 problem 1(e)
11.6 problem 1(f)
11.7 problem 1(g)
11.8 problem 1(h)
11.9 problem 2