函数是高中阶段数学学习的核心内容,而作为函数当中的代表,二次函数在高中数学的地位更是重中之重,二次函数与一元二次方程及一元二次不等式这三个二次式间的关系十分密切,本文从二次函数与一元二次方程的关系这一层面,向读者阐述了它们的关系,希望收到以点代面的效果. Function is the core content of high school mathematics learning. As the representative of the function, the secondary function is more important in high school mathematics. The quadratic function and the quadratic quadratic equation and the quadratic quadratic inequality are the second Relations between the type is very close, this paper from the quadratic function and quadratic equation of the relationship between this level, to readers elaborated on their relationship, I hope to receive the effect of the point generation.