Think statistically, In four days you can't master calculus.
But, you can increase the probability of getting more known questions by solving past year papers like anything. Set no goals, just solve past papers like crazy all 4 days. Look at solutions maybe just after a minute of trying on own, target is to convince your brain that question can be solved.
[Fun fact: I too studied calculus and did same for my differential equations exam.]
Think statistically, In four days you can't master calculus.
But, you can increase the probability of getting more known questions by solving past year papers like anything. Set no goals, just solve past papers like crazy all 4 days. Look at solutions maybe just after a minute of trying on own, target is to convince your brain that question can be solved.
[Fun fact: I too studied calculus and did same for my differential equations exam.]
That actually helped I have nothing to lose, thanks kind stranger