有一些数学题,题中涉及到若干个量,其中有常量、也有变量,同学们在解答时,由于思维定势,不太习惯把其中的常量暂视为变量、而把其中的变量暂视为常量的做法,结果求解过程异常复杂甚至难以解出.其实,常量与变量是相对的,是辩证统一的关系.如果根据需要,将它们的地位调换,即“反? There are some mathematics questions. There are several quantities involved in the question. There are constants and variables. When the students are answering, due to the fixed mindset, they are not used to temporarily treating the constants as variables, and temporarily hold the variables among them. For the practice of constants, the solution of the results is extremely complicated and difficult to solve. In fact, the constants and variables are relative, and they are dialectical and unified relations. If they are needed, they will be replaced by their positions.