Mathematics fascicle, mathematics essence and high score guide are three reference books of the same name, all of which have been used.

These three books have their own characteristics:

The division of books is too simple, the high score guide is somewhat difficult, the details are closer to the exam, and the difficulty and difficulty are well combined.

If the foundation is weak, you can combine the volume and the fine point.

If the foundation is ok, you can combine subdivision with high score.

If you have time, buy all three books. If you have no time, read them carefully.