derivative of 2/(x+8)

Lösung

\frac{d}{d x} (\frac{2}{x + 8})

- \frac{2}{( x + 8 ) ^{2}}

Schritte zur Lösung

\frac{d}{d x} (\frac{2}{x + 8})

Entferne die Konstante:

(a \cdot f)^{'} = a \cdot f^{'}

= 2 \frac{d}{d x} (\frac{1}{x + 8})

Wende Exponentenregel an:

\frac{1}{a} = a^{- 1}

= 2 \frac{d}{d x} ((x + 8)^{- 1})

Wende die Kettenregel an:

- \frac{1}{( x + 8 ) ^{2}} \frac{d}{d x} (x + 8)

= - \frac{1}{( x + 8 ) ^{2}} \frac{d}{d x} (x + 8)

\frac{d}{d x} (x + 8) = 1

= 2 (- \frac{1}{( x + 8 ) ^{2}} \cdot 1)

Vereinfache

2 (- \frac{1}{( x + 8 ) ^{2}} \cdot 1) : - \frac{2}{( x + 8 ) ^{2}}

= - \frac{2}{( x + 8 ) ^{2}}

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