Подробное решение
-
Не могу найти шаги в поиске этой производной.
Но производная
Ответ:
log(x) / / 4 \ / 3\ \
/ 4 \ |log\3*x + cos(x)/ \-sin(x) + 12*x /*log(x)|
\3*x + cos(x)/ *|------------------ + ------------------------|
| x 4 |
\ 3*x + cos(x) /
$$\left(3 x^{4} + \cos{\left(x \right)}\right)^{\log{\left(x \right)}} \left(\frac{\left(12 x^{3} - \sin{\left(x \right)}\right) \log{\left(x \right)}}{3 x^{4} + \cos{\left(x \right)}} + \frac{\log{\left(3 x^{4} + \cos{\left(x \right)} \right)}}{x}\right)$$
/ 2 2 \
log(x) |/ / 4 \ / 3\ \ / 4 \ / 2\ / 3\ / 3\|
/ 4 \ ||log\3*x + cos(x)/ \-sin(x) + 12*x /*log(x)| log\3*x + cos(x)/ \-cos(x) + 36*x /*log(x) \-sin(x) + 12*x / *log(x) 2*\-sin(x) + 12*x /|
\3*x + cos(x)/ *||------------------ + ------------------------| - ------------------ + ------------------------ - ------------------------- + -------------------|
|| x 4 | 2 4 2 / 4 \ |
|\ 3*x + cos(x) / x 3*x + cos(x) / 4 \ x*\3*x + cos(x)/ |
\ \3*x + cos(x)/ /
$$\left(3 x^{4} + \cos{\left(x \right)}\right)^{\log{\left(x \right)}} \left(\left(\frac{\left(12 x^{3} - \sin{\left(x \right)}\right) \log{\left(x \right)}}{3 x^{4} + \cos{\left(x \right)}} + \frac{\log{\left(3 x^{4} + \cos{\left(x \right)} \right)}}{x}\right)^{2} + \frac{\left(36 x^{2} - \cos{\left(x \right)}\right) \log{\left(x \right)}}{3 x^{4} + \cos{\left(x \right)}} - \frac{\left(12 x^{3} - \sin{\left(x \right)}\right)^{2} \log{\left(x \right)}}{\left(3 x^{4} + \cos{\left(x \right)}\right)^{2}} + \frac{2 \cdot \left(12 x^{3} - \sin{\left(x \right)}\right)}{x \left(3 x^{4} + \cos{\left(x \right)}\right)} - \frac{\log{\left(3 x^{4} + \cos{\left(x \right)} \right)}}{x^{2}}\right)$$
/ 3 / 2 \ 2 3 \
log(x) |/ / 4 \ / 3\ \ / 4 \ / / 4 \ / 3\ \ | / 4 \ / 2\ / 3\ / 3\| / 3\ / 3\ / 3\ / 2\ / 2\ / 3\ |
/ 4 \ ||log\3*x + cos(x)/ \-sin(x) + 12*x /*log(x)| 2*log\3*x + cos(x)/ |log\3*x + cos(x)/ \-sin(x) + 12*x /*log(x)| | log\3*x + cos(x)/ \-cos(x) + 36*x /*log(x) \-sin(x) + 12*x / *log(x) 2*\-sin(x) + 12*x /| (72*x + sin(x))*log(x) 3*\-sin(x) + 12*x / 3*\-sin(x) + 12*x / 2*\-sin(x) + 12*x / *log(x) 3*\-cos(x) + 36*x / 3*\-cos(x) + 36*x /*\-sin(x) + 12*x /*log(x)|
\3*x + cos(x)/ *||------------------ + ------------------------| + -------------------- + 3*|------------------ + ------------------------|*|- ------------------ + ------------------------ - ------------------------- + -------------------| + ---------------------- - -------------------- - ------------------- + --------------------------- + ------------------- - --------------------------------------------|
|| x 4 | 3 | x 4 | | 2 4 2 / 4 \ | 4 2 2 / 4 \ 3 / 4 \ 2 |
|\ 3*x + cos(x) / x \ 3*x + cos(x) / | x 3*x + cos(x) / 4 \ x*\3*x + cos(x)/ | 3*x + cos(x) / 4 \ x *\3*x + cos(x)/ / 4 \ x*\3*x + cos(x)/ / 4 \ |
\ \ \3*x + cos(x)/ / x*\3*x + cos(x)/ \3*x + cos(x)/ \3*x + cos(x)/ /
$$\left(3 x^{4} + \cos{\left(x \right)}\right)^{\log{\left(x \right)}} \left(\left(\frac{\left(12 x^{3} - \sin{\left(x \right)}\right) \log{\left(x \right)}}{3 x^{4} + \cos{\left(x \right)}} + \frac{\log{\left(3 x^{4} + \cos{\left(x \right)} \right)}}{x}\right)^{3} + 3 \left(\frac{\left(12 x^{3} - \sin{\left(x \right)}\right) \log{\left(x \right)}}{3 x^{4} + \cos{\left(x \right)}} + \frac{\log{\left(3 x^{4} + \cos{\left(x \right)} \right)}}{x}\right) \left(\frac{\left(36 x^{2} - \cos{\left(x \right)}\right) \log{\left(x \right)}}{3 x^{4} + \cos{\left(x \right)}} - \frac{\left(12 x^{3} - \sin{\left(x \right)}\right)^{2} \log{\left(x \right)}}{\left(3 x^{4} + \cos{\left(x \right)}\right)^{2}} + \frac{2 \cdot \left(12 x^{3} - \sin{\left(x \right)}\right)}{x \left(3 x^{4} + \cos{\left(x \right)}\right)} - \frac{\log{\left(3 x^{4} + \cos{\left(x \right)} \right)}}{x^{2}}\right) + \frac{\left(72 x + \sin{\left(x \right)}\right) \log{\left(x \right)}}{3 x^{4} + \cos{\left(x \right)}} - \frac{3 \cdot \left(36 x^{2} - \cos{\left(x \right)}\right) \left(12 x^{3} - \sin{\left(x \right)}\right) \log{\left(x \right)}}{\left(3 x^{4} + \cos{\left(x \right)}\right)^{2}} + \frac{2 \left(12 x^{3} - \sin{\left(x \right)}\right)^{3} \log{\left(x \right)}}{\left(3 x^{4} + \cos{\left(x \right)}\right)^{3}} + \frac{3 \cdot \left(36 x^{2} - \cos{\left(x \right)}\right)}{x \left(3 x^{4} + \cos{\left(x \right)}\right)} - \frac{3 \left(12 x^{3} - \sin{\left(x \right)}\right)^{2}}{x \left(3 x^{4} + \cos{\left(x \right)}\right)^{2}} - \frac{3 \cdot \left(12 x^{3} - \sin{\left(x \right)}\right)}{x^{2} \cdot \left(3 x^{4} + \cos{\left(x \right)}\right)} + \frac{2 \log{\left(3 x^{4} + \cos{\left(x \right)} \right)}}{x^{3}}\right)$$