derivative of (e^{4x}/(ln(6x)))

解答

\frac{d}{d x} (\frac{e ^{4 x}}{ln ( 6 x )})

\frac{4 e ^{4 x} x ln ( 6 x ) - e ^{4 x}}{x ln ^{2} ( 6 x )}

求解步骤

\frac{d}{d x} (\frac{e ^{4 x}}{ln ( 6 x )})

使用微分除法定则:

(\frac{f}{g})^{'} = \frac{f ^{'} \cdot g - g ^{'} \cdot f}{g ^{2}}

= \frac{\frac{d}{d x} ( e ^{4 x} ) ln ( 6 x ) - \frac{d}{d x} ( ln ( 6 x ) ) e ^{4 x}}{( ln ( 6 x ) ) ^{2}}

\frac{d}{d x} (e^{4 x}) = e^{4 x} \cdot 4

\frac{d}{d x} (ln (6 x)) = \frac{1}{x}

= \frac{e ^{4 x} \cdot 4 ln ( 6 x ) - \frac{1}{x} e ^{4 x}}{( ln ( 6 x ) ) ^{2}}

化简

\frac{e ^{4 x} \cdot 4 ln ( 6 x ) - \frac{1}{x} e ^{4 x}}{ln ^{2} ( 6 x )} : \frac{4 e ^{4 x} x ln ( 6 x ) - e ^{4 x}}{x ln ^{2} ( 6 x )}

= \frac{4 e ^{4 x} x ln ( 6 x ) - e ^{4 x}}{x ln ^{2} ( 6 x )}

\int \frac{2 x}{e ^{x}} d x

\frac{d}{d x} (36 x^{2})

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