在我们的生活中，有许许多多的问题需要用数学的方法去解决。能用数学方法去解决的实际问题，都可以称为应用问题。例如我们常常遇到的行程问题、浓度问题、工程问题，以及涉及到推理和分析的机智性问题，都是典型的应用问题。前一类问题用的方法都要求计算出具体的数字。... In our life, there are so many problems that need to be solved mathematically. Practical problems that can be solved mathematically can all be called application problems. For example, we often encounter travel problems, concentration problems, engineering problems, as well as involving the reasoning and analysis of the intellectual problems, are typical application problems. The methods used in the former problem require the calculation of specific numbers. ...