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Mathematics difficulty of 2022 postgraduate entrance examination
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In 2022, the postgraduate mathematics caught up with the "even years". The average score of odd years in the previous year was higher than that of even years, and the phenomenon of "big and small years" was obvious. The average math score in even years is basically lower than 70. As many people predicted before the exam, it is really difficult to take the postgraduate entrance examination.

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.