Подробное решение
Не могу найти шаги в поиске этой производной.
Но производная
Ответ:
tan(x) // 2 \ sin(x)*tan(x)\
cos (x)*|\1 + tan (x)/*log(cos(x)) - -------------|
\ cos(x) /
$$\left(\left(\tan^{2}{\left (x \right )} + 1\right) \log{\left (\cos{\left (x \right )} \right )} - \frac{\sin{\left (x \right )} \tan{\left (x \right )}}{\cos{\left (x \right )}}\right) \cos^{\tan{\left (x \right )}}{\left (x \right )}$$
/ 2 2 / 2 \ \
tan(x) |// 2 \ sin(x)*tan(x)\ sin (x)*tan(x) 2*\1 + tan (x)/*sin(x) / 2 \ |
cos (x)*||\1 + tan (x)/*log(cos(x)) - -------------| - tan(x) - -------------- - ---------------------- + 2*\1 + tan (x)/*log(cos(x))*tan(x)|
|\ cos(x) / 2 cos(x) |
\ cos (x) /
$$\left(\left(\left(\tan^{2}{\left (x \right )} + 1\right) \log{\left (\cos{\left (x \right )} \right )} - \frac{\sin{\left (x \right )} \tan{\left (x \right )}}{\cos{\left (x \right )}}\right)^{2} + 2 \left(\tan^{2}{\left (x \right )} + 1\right) \log{\left (\cos{\left (x \right )} \right )} \tan{\left (x \right )} - \frac{2 \sin{\left (x \right )}}{\cos{\left (x \right )}} \left(\tan^{2}{\left (x \right )} + 1\right) - \frac{\sin^{2}{\left (x \right )} \tan{\left (x \right )}}{\cos^{2}{\left (x \right )}} - \tan{\left (x \right )}\right) \cos^{\tan{\left (x \right )}}{\left (x \right )}$$
/ 3 / 2 / 2 \ \ 2 2 / 2 \ 3 / 2 \ \
tan(x) | // 2 \ sin(x)*tan(x)\ 2 // 2 \ sin(x)*tan(x)\ |sin (x)*tan(x) / 2 \ 2*\1 + tan (x)/*sin(x) | / 2 \ 3*sin (x)*\1 + tan (x)/ 2*sin(x)*tan(x) 2*sin (x)*tan(x) 2 / 2 \ 6*\1 + tan (x)/*sin(x)*tan(x)|
cos (x)*|-3 + |\1 + tan (x)/*log(cos(x)) - -------------| - 3*tan (x) - 3*|\1 + tan (x)/*log(cos(x)) - -------------|*|-------------- - 2*\1 + tan (x)/*log(cos(x))*tan(x) + ---------------------- + tan(x)| + 2*\1 + tan (x)/ *log(cos(x)) - ----------------------- - --------------- - ---------------- + 4*tan (x)*\1 + tan (x)/*log(cos(x)) - -----------------------------|
| \ cos(x) / \ cos(x) / | 2 cos(x) | 2 cos(x) 3 cos(x) |
\ \ cos (x) / cos (x) cos (x) /
$$\left(\left(\left(\tan^{2}{\left (x \right )} + 1\right) \log{\left (\cos{\left (x \right )} \right )} - \frac{\sin{\left (x \right )} \tan{\left (x \right )}}{\cos{\left (x \right )}}\right)^{3} - 3 \left(\left(\tan^{2}{\left (x \right )} + 1\right) \log{\left (\cos{\left (x \right )} \right )} - \frac{\sin{\left (x \right )} \tan{\left (x \right )}}{\cos{\left (x \right )}}\right) \left(- 2 \left(\tan^{2}{\left (x \right )} + 1\right) \log{\left (\cos{\left (x \right )} \right )} \tan{\left (x \right )} + \frac{2 \sin{\left (x \right )}}{\cos{\left (x \right )}} \left(\tan^{2}{\left (x \right )} + 1\right) + \frac{\sin^{2}{\left (x \right )} \tan{\left (x \right )}}{\cos^{2}{\left (x \right )}} + \tan{\left (x \right )}\right) + 2 \left(\tan^{2}{\left (x \right )} + 1\right)^{2} \log{\left (\cos{\left (x \right )} \right )} + 4 \left(\tan^{2}{\left (x \right )} + 1\right) \log{\left (\cos{\left (x \right )} \right )} \tan^{2}{\left (x \right )} - \frac{3 \sin^{2}{\left (x \right )}}{\cos^{2}{\left (x \right )}} \left(\tan^{2}{\left (x \right )} + 1\right) - \frac{6 \sin{\left (x \right )}}{\cos{\left (x \right )}} \left(\tan^{2}{\left (x \right )} + 1\right) \tan{\left (x \right )} - \frac{2 \sin^{3}{\left (x \right )}}{\cos^{3}{\left (x \right )}} \tan{\left (x \right )} - \frac{2 \sin{\left (x \right )}}{\cos{\left (x \right )}} \tan{\left (x \right )} - 3 \tan^{2}{\left (x \right )} - 3\right) \cos^{\tan{\left (x \right )}}{\left (x \right )}$$