Written practice: the real mock test and two final-style mocks

The final is a written test of 5 questions worth 4 points each. Mock Test 1 is the real mock paper of 2025–26 from the course materials; mock B and mock C follow the same format and were written for this site from the problem types of the tutorials. Every part has the answer and a full worked solution (final answers are verified by computer algebra); some parts link to the lab.