I don't know if you have found out that the last two questions in the senior high school entrance examination are specialized or simplified on the basis of the first question. Give an example of a quadratic function. The original problem is very complicated. In fact, it should be very easy for you to get the results of the first quiz first, and then do it according to the results you get. Delete the first two quizzes for the competition question (interjection). For geometry problems, he will give you a specialized example first, and you should push down the specialized conclusion-the general special conclusion is the general conclusion.

Then you have to master the "forward and backward" reasoning method: suppose you know the conclusion, what can you know? What are the existing conditions for reaching a conclusion? To analyze the conclusions and conditions you requested. Most of these things are just used to broaden the thinking of solving problems. You can't just follow the old routine, you should try new methods. If not, you must turn around immediately-don't get stuck! ! !

A new proof method (maybe you know it): the same method, such as constructing xxX to prove xXXX through XX.

You can use xxxx to construct xxx to prove xx, but don't use it indiscriminately! ! Easy to get perjury! ! ! ! !

Don't be afraid, you can do it! ! ! ! ! !

Also, keep an eye on the last question while ensuring the correct rate before!