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从一道高考题谈符号函数习题解法武都县职业中学王云１９９６年高考（理）１５题，给出了函数表示符号ｆ（ｘ），没有给出整个定义域内的解析式，需求函数值．对于此类题目中仅有函数符号而无函数解析表达式的习题，简称符号函数习题．此类题看似简单，但要涉及到函数周期...
From a college entrance examination on the problem of symbolic function solution Wudu County Vocational Middle School Wang Yun in 1996 in the college entrance examination (reason) 15 questions, given the function of the symbol f (x), does not give the entire domain within the analytical formula, the value of the demand function. For the problem of this type of problem, there are only function symbols and no function analytical expressions. It is referred to as symbolic function exercises. This kind of question may seem simple, but it involves a function cycle...