Which is more difficult, the new observation or the core test center?

Both are big. The new observation pays attention to practicality and subdivision of knowledge points, and attaches importance to the explanation and improvement of basic knowledge, which is suitable for students who have mastered knowledge points initially. The core test sites are more in-depth and meticulous, paying attention to the excavation and application of knowledge points, which is suitable for students who have mastered the basic knowledge and are preparing for the college entrance examination. "New Observation" and "Core Test Center" are commonly used review materials for senior high school students to prepare for the college entrance examination in China.

The answer to the question of seven bridges

Math diary, a pupil: making school tools.

Quasi-senior high school students want to break through 140 in mathematics. What are the efficient learning methods?

Go to math with you on the seventh day.

Why do most scientists like to take the unproven hypothesis of evolution as truth?

Recommendation of classic reading bibliography for primary school students

What abnormal elementary school problems have you seen?

What crosstalk works did the three great mathematicians in the Three Kingdoms period come from?

For math problems, every page of Xiaoming's diary has a number. He uses numbers from 0 to 9, which totals 98 1. Please work out how many pages Xiao Ming's diary has. Urgent! ! !

Lagrange mean value theorem. How to prove this theorem in high school mathematics, because sometimes I think it is more convenient to do the problem this way.