Many students who took the 22-year postgraduate entrance examination joined the army of preparing for the exam. As we all know, mathematics is the easiest subject to score in the postgraduate entrance examination. Mathematics is ready, which means that more than half of the postgraduate entrance examination is successful. However, many small white people who decide to take the postgraduate entrance examination this year don't know how to start. So what do you need to do at different stages of postgraduate mathematics in 2022? The following details the related matters in different stages.