论文部分内容阅读
判别式在中学数学中占有十分重要的地位,它是等式与不等式相联系的重要桥梁,是建立不等关系的重要途径.是研究二次函数及二次方程必不缺少的工具.若能在解题过程中正确巧妙的运用,就能给人一种简单明快、耳目一新的感觉.现举例说明:
Discriminant plays a very important role in middle school mathematics. It is an important link between equality and inequality. It is an important way to establish unequal relations. It is a tool to study quadratic functions and quadratic equations. The correct and clever use of the problem-solving process can give people a feeling of simplicity and freshness. This is an example: