The mathematical finale of the senior high school entrance examination is a quadratic function. My video has a special explanation of quadratic function, and my knowledge has a foundation and sublimation. For example, when I come down to video, I will talk about quadratic function images. I not only talk about image translation, but also about functional image inversion.

Independent variables have absolute values. How to solve these problems is more knowledgeable than textbooks. After learning this knowledge, you will have a higher understanding of quadratic functions. In particular, I will talk about symmetry axis, understanding the maximum problem, monotonicity and quadratic inequality, finding the maximum with parameters, moving point problems and so on. Are all involved in the ending you want.