/ d / log(3) \\|
-|-----|---------||| *sin(x)
\dxi_2\log(xi_2)//|xi_2=cos(x)
$$- \sin{\left(x \right)} \left. \frac{d}{d \xi_{2}} \frac{\log{\left(3 \right)}}{\log{\left(\xi_{2} \right)}} \right|_{\substack{ \xi_{2}=\cos{\left(x \right)} }}$$
2 / 2 \
sin (x)*|1 + -----------|*log(3)
/ d / log(3) \\| \ log(cos(x))/
- |-----|---------||| *cos(x) + --------------------------------
\dxi_2\log(xi_2)//|xi_2=cos(x) 2 2
cos (x)*log (cos(x))
$$- \cos{\left(x \right)} \left. \frac{d}{d \xi_{2}} \frac{\log{\left(3 \right)}}{\log{\left(\xi_{2} \right)}} \right|_{\substack{ \xi_{2}=\cos{\left(x \right)} }} + \frac{\left(1 + \frac{2}{\log{\left(\cos{\left(x \right)} \right)}}\right) \log{\left(3 \right)} \sin^{2}{\left(x \right)}}{\log{\left(\cos{\left(x \right)} \right)}^{2} \cos^{2}{\left(x \right)}}$$
/ / 2 \ 2 / 2 \ 2 / 2 \ \
| 2 3*|1 + -----------|*log(3) 2*sin (x)*|1 + -----------|*log(3) 2*sin (x)*|1 + -----------|*log(3) |
| 2*sin (x)*log(3) \ log(cos(x))/ \ log(cos(x))/ \ log(cos(x))/ / d / log(3) \\| |
|-------------------- + -------------------------- + ---------------------------------- + ---------------------------------- + |-----|---------||| |*sin(x)
| 3 4 2 3 3 3 2 \dxi_2\log(xi_2)//|xi_2=cos(x)|
\cos (x)*log (cos(x)) cos(x)*log (cos(x)) cos (x)*log (cos(x)) cos (x)*log (cos(x)) /
$$\left(\left. \frac{d}{d \xi_{2}} \frac{\log{\left(3 \right)}}{\log{\left(\xi_{2} \right)}} \right|_{\substack{ \xi_{2}=\cos{\left(x \right)} }} + \frac{2 \cdot \left(1 + \frac{2}{\log{\left(\cos{\left(x \right)} \right)}}\right) \log{\left(3 \right)} \sin^{2}{\left(x \right)}}{\log{\left(\cos{\left(x \right)} \right)}^{2} \cos^{3}{\left(x \right)}} + \frac{3 \cdot \left(1 + \frac{2}{\log{\left(\cos{\left(x \right)} \right)}}\right) \log{\left(3 \right)}}{\log{\left(\cos{\left(x \right)} \right)}^{2} \cos{\left(x \right)}} + \frac{2 \cdot \left(1 + \frac{2}{\log{\left(\cos{\left(x \right)} \right)}}\right) \log{\left(3 \right)} \sin^{2}{\left(x \right)}}{\log{\left(\cos{\left(x \right)} \right)}^{3} \cos^{3}{\left(x \right)}} + \frac{2 \log{\left(3 \right)} \sin^{2}{\left(x \right)}}{\log{\left(\cos{\left(x \right)} \right)}^{4} \cos^{3}{\left(x \right)}}\right) \sin{\left(x \right)}$$