(\partial)/(\partial r)(r-s)

解答

\frac{\partial}{\partial r} (r - s)

1

求解步骤

\frac{\partial}{\partial r} (r - s)

将

s

视为常数

使用微分加减法定则:

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

= \frac{\partial}{\partial r} (r) - \frac{\partial}{\partial r} (s)

\frac{\partial}{\partial r} (r) = 1

\frac{\partial}{\partial r} (s) = 0

= 1 - 0

化简

= 1

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