derivative of x^2-3x+1

解答

\frac{d}{d x} (x^{2} - 3 x + 1)

2 x - 3

求解步骤

\frac{d}{d x} (x^{2} - 3 x + 1)

使用微分加减法定则:

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

= \frac{d}{d x} (x^{2}) - \frac{d}{d x} (3 x) + \frac{d}{d x} (1)

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

\frac{d}{d x} (3 x) = 3

\frac{d}{d x} (1) = 0

= 2 x - 3 + 0

化简

= 2 x - 3