calculus · worked example

Solve ln(x) = 1/x

Method: 標準導數公式. Verified step-by-step solution with our free AI math solver.
Problem

ddxln(x)\frac{d}{dx}\ln(x)

Step-by-step solution

  1. 自然對數是每位學習微積分的學生都必須熟記的基本導數之一。

  2. 由定義,或對 1tdt\int \frac{1}{t} dt 套用微積分基本定理:ddxln(x)=1x\frac{d}{dx}\ln(x) = \frac{1}{x}

  3. 注意定義域限制:ln(x)\ln(x) 僅在 x>0x > 0 時有定義,因此導數在 x>0x > 0 時成立。

Answer

1x\frac{1}{x}

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