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Beliebt Rechnen >

derivative f(x)=9x^5(x^3-2x)

Lösung

ableitung von

f (x) = 9 x^{5} (x^{3} - 2 x)

Lösung

9 (8 x^{7} - 12 x^{5})

Schritte zur Lösung

\frac{d}{d x} (9 x^{5} (x^{3} - 2 x))

Entferne die Konstante:

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

= 9 \frac{d}{d x} (x^{5} (x^{3} - 2 x))

Wende die Produktregel an:

(f \cdot g)^{'} = f^{'} \cdot g + f \cdot g^{'}

f = x^{5}, g = x^{3} - 2 x

= 9 (\frac{d}{d x} (x^{5}) (x^{3} - 2 x) + \frac{d}{d x} (x^{3} - 2 x) x^{5})

\frac{d}{d x} (x^{5}) = 5 x^{4}

\frac{d}{d x} (x^{3} - 2 x) = 3 x^{2} - 2

= 9 (5 x^{4} (x^{3} - 2 x) + (3 x^{2} - 2) x^{5})

Multipliziere aus

5 x^{4} (x^{3} - 2 x) + (3 x^{2} - 2) x^{5} : 8 x^{7} - 12 x^{5}

= 9 (8 x^{7} - 12 x^{5})

Graph

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