本文介绍这类方程的一个求解公式。

This paper introduces a formula for solving this equation.

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你要运用那条公式，来求解。

And you have to use that equation to evaluate that.

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在求解概率问题时，掌握逆事件公式与加法公式的运用，会使问题变得简单。

It can help easily solve the probability problem to master inverse-event formula and plus formula.

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在求解概率问题时，掌握逆事件公式与加法公式的运用，会使问题变得简单。

It can help easily solve the probability problem to master inverse-event formula and plus formula.

youdao