First of all, it is very difficult for this major to take Math II. There are not many things to learn in mathematics, mainly in the process of practice. All formulas, theorems, etc. All tools are in hand, and the process of doing the problem is to constantly judge what tools should be dug up and how to use them comprehensively. Personally recommend Zhang Yu's books and Tang Jiafeng's exercises.
Then there are professional courses, which I personally think are very important, and the score of 150 is the most difficult. The content of the book is not much, but it is really difficult to get high marks. Don't believe others' irresponsible words, so that everyone will get high marks in the exam. I asked the seniors in the school that there is a police research institute with three volumes of criminal skills, but this is only open to internal students, so I haven't seen it yet. If you allow, you can take the course. I am a poor diaosi.
Finally, in public classes, most students majoring in this major are science students, and their English political foundation is average, so don't wait until the end and start ahead of time, especially if you study English very hard. I have met many people, and English is just a fold, but not a line. There are many resources on English online, and a few dollars can buy many classes. Political comparison recommended Xiao Xiurong's Xiao Si Xiao Ba.
If you have a direction, you must make a study plan that suits you. There are many similar experience posts and chicken soup for postgraduate entrance examination in Zhihu. Just two. Everyone's is different and needs to be tailored according to their own situation. You can make appropriate adjustments in the middle, but you can't adjust the plan as soon as you encounter difficulties and you can't implement it. This is putting the cart before the horse.