How to choose a textbook on higher mathematics in order to understand the calculations from a textbook on electrical engineering?

Question

Electronics

Hello.
I'm trying to understand mathematical calculations from textbooks on electrical engineering (take any textbook for higher education and there are a lot of different matan), but nothing is clear :(
For example, TOE Bessonov.
Please advise a textbook of higher mathematics with the expectation that I only need to understand textbook on TOE, but I don’t need proofs, etc.
It will be great if you advise not only a specific textbook, but also specific chapters.Although you can simply advise topics that you need to understand, and I will choose the textbook
myself.
I do not remember anything, except for elementary operations.