Grading of postgraduate mathematics is given according to the steps. As long as the candidates do the questions step by step, the teacher will give points according to the steps. To what extent \x0d\ steps, detailed scoring criteria are given in the answer. \x0d\ The final answer is wrong, and the previous steps are all right. If you directly deduct the final answer score, you will generally deduct about 2 points. \x0d\ Therefore, during the exam, try to write down the process and formula for the questions that you can't write, and you will generally get a formula score.