calculus · worked example

Solve 1/x = -1/x^2

Method: 帶負指數的冪法則. Verified step-by-step solution with our free AI math solver.
Problem

ddx(1x)\frac{d}{dx}\bigl(\tfrac{1}{x}\bigr)

Step-by-step solution

  1. 改寫成冪的形式:1x=x1\frac{1}{x} = x^{-1}

  2. n=1n = -1 套用冪法則:ddx(x1)=(1)x2\frac{d}{dx}(x^{-1}) = (-1) x^{-2}

  3. 再寫回分數形式:1x2-\frac{1}{x^2}

Answer

1x2-\frac{1}{x^2}

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