derivative sin(7x)

解答

导数

sin (7 x)

cos (7 x) \cdot 7

求解步骤

\frac{d}{d x} (sin (7 x))

使用连锁律:

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

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

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

= cos (7 x) \cdot 7

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