在解决一元二次函数以及一元二次不等式时,往往有的问题比较繁琐,如果我们能象建筑施工一样,为更高的建筑目标先建一个基础,在这个基础上再进一步提高目标,那么我们也能取得比较理想的效果。 When solving a quadratic quadratic function and a quadratic quadratic inequality, the problems often are quite complicated. If we can build a foundation for higher architectural goals like building construction, and then further improve our goals on the basis of this, then we Can also achieve the desired effect.