Postgraduate entrance examination mathematics has steps.

Postgraduate entrance examination mathematics examination requirements:

1. Understand the concepts of convergence and sum of convergent constant series, and master the basic properties of series and the necessary conditions for convergence.

2. Master the conditions of geometric series and convergence and divergence of series.

3. Master the comparison discrimination method and ratio discrimination method of positive series convergence, and use the root value discrimination method.

4. Master the Leibniz discriminant method of staggered series.

5. Understand the concepts of absolute convergence and conditional convergence of arbitrary series.

6. Understand the convergence domain of function term series and the concept of function.