(cos(5x))^'

解答

(cos (5 x))^{^{'}}

- sin (5 x) \cdot 5

求解步骤

(cos (5 x))^{'}

使用连锁律:

- sin (5 x) (5 x)^{'}

= - sin (5 x) (5 x)^{'}

(5 x)^{'} = 5

= - sin (5 x) \cdot 5

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