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分段函数在生活中的应用非常广泛.所谓分段函数,即函数在它的定义域中,对于自变量的不同取值范围,对应不同的法则.它可以在生活的各个领域找到原型,现举例如下.1.邮资问题例1国内投寄信函(外埠)的邮资标准是:每封信的质量不超过20 g付邮资80分,超过20 g而不超过40 g付邮资160分,超过40 g而不超过60 g付邮资240分,依次类
Segmentation function is widely used in life. The so-called segmentation function, that is, the function in its definition domain, corresponds to different rules for different ranges of values of the independent variable. It can find prototypes in various fields of life. Examples are as follows: 1. Postage Issues Example 1 The postage standard for domestic posting letters (foreign trade) is: the quality of each letter does not exceed 20 g and postage 80 points, exceeds 20 g but does not exceed 40 g, and postage 160 points, over 40 g no more than 60 g paid for postage 240 points, in order