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Beliebt Rechnen >

derivative of cos^2(7x)

Lösung

\frac{d}{d x} (cos^{2} (7 x))

Lösung

- 14 cos (7 x) sin (7 x)

Schritte zur Lösung

\frac{d}{d x} (cos^{2} (7 x))

Wende die Kettenregel an:

2 cos (7 x) \frac{d}{d x} (cos (7 x))

= 2 cos (7 x) \frac{d}{d x} (cos (7 x))

\frac{d}{d x} (cos (7 x)) = - sin (7 x) \cdot 7

= 2 cos (7 x) (- sin (7 x) \cdot 7)

Vereinfache

= - 14 cos (7 x) sin (7 x)

Graph

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