According to the different requirements of various disciplines and majors on the mathematical knowledge and ability that graduate students should have when entering the postgraduate entrance examination, there are three kinds of postgraduate entrance examination papers: one for engineering and one for mathematics.

For economic management, it is Mathematics III (before 2009, it was Mathematics III for management and Mathematics IV for economy, and after 2009, the syllabus merged Mathematics III and Mathematics IV). There are specific regulations on the types of test papers used by different majors.

Examination requirements:

1, understand the concepts of matrix, identity matrix, quantitative matrix, diagonal matrix, triangular matrix, symmetric matrix and antisymmetric matrix, and their properties.

2. Master the linear operation, multiplication, transposition and its operation rules of matrix, and understand the determinant properties of square matrix power and square matrix product.

3. Understand the concept of inverse matrix, master the properties of inverse matrix, the necessary and sufficient conditions of matrix reversibility, understand the concept of adjoint matrix, and use adjoint matrix to find inverse matrix.

4. Understand the concept of elementary transformation of matrix, understand the properties of elementary matrix and the concept of matrix equivalence, understand the concept of matrix rank, and master the method of finding matrix rank and inverse matrix by elementary transformation.