The four sets of papers predicted by Li Lin before the exam are basically four sets of papers that must be done before the exam. The style of these papers is close to the real question and very comprehensive. Generally, I have to finish the 2005-22 postgraduate entrance examination paper and then do four sets of papers for Li Lin for 23 years. At this time, you will find that the difficulty has obviously increased by a step, and the knowledge points of the topic investigation are not so obvious. Moreover, the amount of calculation is particularly large and the comprehensiveness is outstanding, which is very worth doing.
Teacher Li Lin, a powerful tutor of mathematics for postgraduate entrance examination, is known as the "sweeping monk" of mathematics for postgraduate entrance examination. She used to be a teacher at Dalian University of Technology. She has nearly 20 years of postgraduate counseling experience and is familiar with the law of postgraduate mathematics proposition. His book "Mathematics Series for Postgraduate Entrance Examination" has been widely praised by students.