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众所周知,根的判别式主要用来判断一元二次方程根的情况。其实,根的判别式在其它方面也有极其重要的作用。一、巧用判别式证不等式
As we all know, the root discriminant is mainly used to determine the root of a quadratic equation. In fact, the root discriminant has an extremely important role in other aspects. First, the use of discriminating certificate inequality