derivative of ln(sqrt((x-3/(x-1))))

解

\frac{d}{d x} (ln (\frac{x - 3}{x - 1}))

\frac{1}{( x - 1 ) ( x - 3 )}

解答ステップ

\frac{d}{d x} (ln (\frac{x - 3}{x - 1}))

連鎖法則を適用:

\frac{1}{\frac{x - 3}{x - 1}} \frac{d}{d x} (\frac{x - 3}{x - 1})

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

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

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

簡素化

\frac{1}{\frac{x - 3}{x - 1}} \cdot \frac{1}{x - 3 ( x - 1 ) ^{\frac{3}{2}}} : \frac{1}{( x - 1 ) ( x - 3 )}

= \frac{1}{( x - 1 ) ( x - 3 )}