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How to cross the line in a short period of time in mathematics three for postgraduate entrance examination?
There is no need to think positively about multiple-choice questions. You can use any method, such as substituting the answer into the calculation. Then there is the big question, which is a little simple. Make sure you do it right. It is very simple to find the eigenvalue of the line generating determinant, and the steps to solve the problem are relatively fixed. Try to find the same type of questions to practice.