derivative of 81-16x^2

解答

\frac{d}{d x} (81 - 16 x^{2})

- 32 x

求解步骤

\frac{d}{d x} (81 - 16 x^{2})

使用微分加减法定则:

(f \pm g)^{'} = f^{'} \pm g^{'}

= \frac{d}{d x} (81) - \frac{d}{d x} (16 x^{2})

\frac{d}{d x} (81) = 0

\frac{d}{d x} (16 x^{2}) = 32 x

= 0 - 32 x

化简

= - 32 x

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