derivative (sin(5x))^{ln(x)}

解答

导数

(sin (5 x))^{l n (x)}

x^{l n (s i n (5 x))} (\frac{ln ( sin ( 5 x ) )}{x} + 5 cot (5 x) ln (x))

求解步骤

\frac{d}{d x} ((sin (5 x))^{l n (x)})

使用指数法则:

a^{b} = e^{b l n (a)}

(sin (5 x))^{l n (x)} = e^{l n (x) l n (s i n (5 x))}

= \frac{d}{d x} (e^{l n (x) l n (s i n (5 x))})

使用连锁律:

e^{l n (x) l n (s i n (5 x))} \frac{d}{d x} (ln (x) ln (sin (5 x)))

= e^{l n (x) l n (s i n (5 x))} \frac{d}{d x} (ln (x) ln (sin (5 x)))

\frac{d}{d x} (ln (x) ln (sin (5 x))) = \frac{ln ( sin ( 5 x ) )}{x} + 5 cot (5 x) ln (x)

= e^{l n (x) l n (s i n (5 x))} (\frac{ln ( sin ( 5 x ) )}{x} + 5 cot (5 x) ln (x))

e^{l n (x) l n (s i n (5 x))} = x^{l n (s i n (5 x))}

= x^{l n (s i n (5 x))} (\frac{ln ( sin ( 5 x ) )}{x} + 5 cot (5 x) ln (x))

y^{'} = 2 y - 3 y^{2}

d er i v a t i v e \frac{x}{x ^{2} + 81}

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