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带有参数的二次方程,要确定参数的值,使它的根满足某些条件,同学们对解此类题往往觉得困难.这里介绍五种方法,供参考.
The quadratic equation with parameters, to determine the value of the parameter, so that its root meets certain conditions, students often find it difficult to solve such problems. Here are five methods for reference.