斜率 (4x)/(x-5)

解答

斜率

\frac{4 x}{x - 5}

- \frac{20}{( x - 5 ) ^{2}}

求解步骤

y = \frac{4 x}{x - 5}

要确定函数的斜率，对

\frac{4 x}{x - 5}

求导

\frac{d}{d x} (\frac{4 x}{x - 5}) = - \frac{20}{( x - 5 ) ^{2}}

- \frac{20}{( x - 5 ) ^{2}}

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