Wednesday		5.1 Ln and differentiation 5.1 (13, 21, 27, 39, 55, 58, 66, 69, 73, 85)
Thursday		5.2 Ln integrals 5.2 (1, 5, 17, 19, 25, 35, 37, 53, 57)
Friday		Finish 5.2