This is all optional teaching materials, but it only covers 2- 1, 2-2, 4-4, 4-5.

I won't say anything except these four books, so I'll just give you the catalogue of these four books.

catalogue

Inequality? And then what? Coordinate system? They are all final questions, space vectors are multiple-choice questions or fill-in-the-blank questions, and conic curves are big questions.

Inequality and coordinate system, which do you grasp? If you are good at it, take him down, and you must get points in the college entrance examination.

I'm glad to solve your problem. If you have any questions, please keep asking questions.