Normal. Postgraduate is a kind of education in higher education. After graduation, you can continue to study for a master's degree through exams. Advanced mathematics is a basic subject formed by calculus, algebra, geometry and their intersection. Its main contents include: series, limit, calculus, spatial analytic geometry and linear algebra, series and ordinary differential equations. It is a basic subject for postgraduate examinations in engineering, science and engineering and finance. The advanced mathematics exam lasts for 3 hours, and the questions are difficult and big. It is normal to leave them unfinished.