Thus the most elementary function of diplomatists is to be messengers.

因此,外交官的最大职责就是充当信使.

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Every elementary function is continuous on its well - defined intervals.

一切初等函数在其定义区间内都是连续的.

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Some methods of judging non - elementary function are given.

给出了 非 初等函数的几种判断方法.

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The problems of definition domain , break point, or and even etc often occur in elementary function.

定义域 、 间断点 、 或与且等问题是初等函数经常遇到的问题.

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Give examples to show that the derivate of elementary function may be unelementary function.

给出实例说明初等函数的导数可以是非初等函数.

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