What we usually pay attention to here is the method of combining functional equations with inequalities, and images and discriminant are the key.
This problem is generally satisfactory. There is no special method, it is relatively simple.
The other two problems are set synthesis and algebraic geometry synthesis.
Personally, although the generation appears in the 25 th position more often,
However, geometric synthesis is generally difficult, and it is necessary to do several generations of synthesis before geometric synthesis.
On the synthesis of generations
Generally speaking, this is a function image moving point problem,
Pay attention to the analytical expression of each line, and use x to represent the coordinates of the point.
Then list the equations or inequalities according to the subject conditions, and you can solve them.
On geometric synthesis
There is no routine in this, and it is easy to have no ideas.
The key is to try more.
Summarize several models
Such as: vertical mode, double rotation mode
And the commonly used auxiliary lines: double the length of the center line, taking the midpoint, and rotating ideas.
To sum up, the three comprehensive questions of the senior high school entrance examination will not appear too strange methods.
There will be no strange solution similar to the same area.
Comparative law of the finale of Beijing senior high school entrance examination.
If you have any other questions, you can ask or add me qq.