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不等关系是实际生活中广泛存在的一种关系,不等式应用题也是一类重要的实际问题,与方程一样,不等式也是一种重要的数学模型.解不等式应用题与方程应用题类似,都需要经过分析数量关系、设未知数、列式、求解和检验几个步骤,但由于不等关系的多样性,不等式应用题的复杂性远远超过方程应用题,是教学上的一个难点,下面举例说明解决不等式应用题需要注意的问题,并提出几点教学建议.一、不等式应用题举例1.长跑比赛中,张华跑在前面,在离终点100m时
Unequal relationship is a kind of relationship that exists widely in real life. Inequality application problem is also an important practical problem. Like equation, Inequality is also an important mathematical model. However, due to the diversity of unequal relations, the complexity of the inequality application is far more than the application of the equation, which is a teaching difficulty. The following is an example of how to solve the problem. Solve inequality application problems need to pay attention to the problem, and make a few teaching suggestions First, the inequality application problems Example 1 long-distance race, Zhang Hua ran in front, at the end of the 100m