IT1: Weekly notes

1. Weeks 36-37 (also in PDF).
2. Weeks 38-39 (also in PDF).
3. Weeks 40-41 (also in PDF).
4. Week 43 (also in PDF, missing an exponent).
5. Weeks 44-45 (also in PDF).
6. Weeks 46-47 (also in PDF).
7. Weeks 48-49 (also in PDF).
8. Weeks 50-51 (also in PDF).