derivative 10x-3x^2

解答

导数

10 x - 3 x^{2}

10 - 6 x

求解步骤

\frac{d}{d x} (10 x - 3 x^{2})

使用微分加减法定则:

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

= \frac{d}{d x} (10 x) - \frac{d}{d x} (3 x^{2})

\frac{d}{d x} (10 x) = 10

\frac{d}{d x} (3 x^{2}) = 6 x

= 10 - 6 x

t an g e n t f (x) = 3 x^{2} - 5 x + 2, at x = - 1

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