(\partial)/(\partial x)(s/(s^2+x^2))

Lösung

\frac{\partial}{\partial x} (\frac{s}{s ^{2} + x ^{2}})

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

Schritte zur Lösung

\frac{\partial}{\partial x} (\frac{s}{s ^{2} + x ^{2}})

Behandle

s

als Konstante

Entferne die Konstante:

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

= s \frac{\partial}{\partial x} (\frac{1}{s ^{2} + x ^{2}})

Wende Exponentenregel an:

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

= s \frac{\partial}{\partial x} ((s^{2} + x^{2})^{- 1})

Wende die Kettenregel an:

- \frac{1}{( s ^{2} + x ^{2} ) ^{2}} \frac{\partial}{\partial x} (s^{2} + x^{2})

= - \frac{1}{( s ^{2} + x ^{2} ) ^{2}} \frac{\partial}{\partial x} (s^{2} + x^{2})

\frac{\partial}{\partial x} (s^{2} + x^{2}) = 2 x

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

Vereinfache

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

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

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