Medium. Mathematics for the postgraduate entrance examination includes three books: advanced mathematics, linear algebra, probability and statistics. Mathematics for postgraduate entrance examination is divided into mathematics one, mathematics two and mathematics three. According to the relevant information, it was moderately difficult to take the postgraduate entrance examination in 2009. For engineering classes, it is mathematics one and mathematics two; Mathematics III is aimed at economic management. Mathematics-advanced mathematics, linear algebra, probability theory and mathematical statistics; Advanced mathematics and linear algebra in Math Test 2; Calculus, linear algebra, probability theory, mathematical statistics.