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什么是导数
更新时间: 2021-06-14 06:08:50  

1、导数,也叫导函数值。又名微商,是微积分中的重要基础概念。

2、当函数y=f(x)的自变量x在一点x0上产生一个增量Δx时,函数输出值的增量Δy与自变量增量Δx的比值在Δx趋于0时的极限a如果存在,a即为在x0处的导数,记作f(x0)或df(x0)/dx。

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